Service Life Extension Programs &

Radar Upgrades

SLEPS Product Catalogue

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The Intersoft Electronics product range covers a wide spectrum of instruments supporting radar technicians and engineers in the complete quality assessment of primary and secondary surveillance radars and ADS-B equipment.This portfolio expands from basic equipment for daily maintenance (RASS-M), over specialist tools (RASS-S) to get a complete picture of the total radar chain to real time display and monitoring tools (RASS-R & SMS).

Using IE-equipment the radar engineer or maintenance technician can evaluate the performance of the radar at top level or in full detail in a preventive, corrective or continuous manner.

All these tools were developed independently from any radar manufacturer, resulting in a versatile portfolio of test equipment, offering objective analysis results.

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rass-m Radar Analysis Support Systems for Maintenance

RASS-M is intended for use by radar technicians during periodic check-ups of the radar under test. The evaluation of the radar system will be completed quickly and without interference to the controllers since the RASS-M system can be connected to signals which are already available and this under operational conditions.

RASS-S Radar Analysis Support Systems for Sites

RASS-S enables radar engineers to carry out thorough check-ups and provide a specialist investigation. Its application results in an increase of the radar’s efficiency and lifetime, at limited cost. These systems have proven to be invaluable instruments for factory and site acceptance of radars and ADS-B systems as well.

RASS-R & SMS Real Time Radar Analysis Support Systems and Sensor Monitoring Systems

RASS-R and SMS are intended for continuous daily monitoring and real time quality control. They can be installed at the radar station or in ATC centres, where data can be input for recording and replay purposes, display on the Multi Radar Display and statistical analysis with the Radar Comparator. SMS is a scalable surveillance monitoring system that provides real-time analysis on multiple surveillance sensors. It has the capability to monitor PSR/SSR/Mode-S radars, ADS-B stations, MLAT systems, A-SMGCS data, ASDE-X data or system track data.

Product range

ie test equipment

ie radar solutions

The many years of experience with RASS were the pedigree for the development of a range of Radar Solutions for operational applications, offered in Radar Upgrades, Service Life Extension Programs (SLEPs) and Modular Radar Solutions.

Radar Upgrades & Service life extension programs

IE offers solutions for SLEP and upgrade of a wide range of radar systems, including PAR/TAR, Fire Finder, Long Range 3D, ASR and Tactical Radar. The core technology is called the Next Generation Signal Processor (NGSP), offering wind farm mitigation, true 3D, improved detection and ECCM capabilities. IE SLEPs are a cost effective solution for air surveillance and sustained operations.

Modular Radar concept

Modular Radar is the integration of NGSP with NGTX, receiver, MSSR, antenna assembly and logistics for full ASR applications. IE offers Modular Radar together with its network partners.

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SERVICE LIFE EXTENSION PROGRAMS AND RADAR UPGRADES

4 1. CHALLENGES

5 2. SOLUTIONS

6 NGSP Technology & Building Blocks 8 ISP Hardware & Processing

10 3. CONCEPTS

10 RF to ASTERIX 10 Modular Design 11 Closed Loop Installation Concept 11 Shadow Mode Validation

12 4. CAPABILITIES

13 PAR/TAR Precision & Terminal Approach14 TPQ Fire Finder15 MARTELLO Longe Range 3D16 TPS Tactical18 SRE-M L-Band en-route radar20 ASR Airport Surveillance

23 5. REFERENCES 24 GLOBAL PRESENCE

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1. challenges

OBSOLESCENCE

MAINTENANCECOST

CHANGING ENVIRONMENT

DETECTION PERFORMANCE

RELIABILITY

When a radar system is past its mid life, owners are faced with the difficult and expensive challenge of sustaining safe airspace surveillance. Service Life Extension Programs (SLEP) are a cost effective solution to alleviate component obsolescence, which creates soaring maintenance and support costs, in turn affecting the performance and reliability of an ageing radar system. Many of these once state-of-the-art radar systems have also been outgrown by the environment they operate in. Increased levels of non-static clutter such as wind farms, 4G/LTE interference, increased air traffic densities and new requirements to track smaller cross-section targets like drones or novel artillery all place a performance overhead on a system that was already operating at the peak of technology for its time. Wind farm mitigation is one of the toughest challenges that IE addresses with its NGSP.

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2. solutions

• Modular design to fit multiple radar types • Cost saving concepts for installation, validation, maintenance and support

• Patented processing technology

NEXT GENERATION SIGNAL PROCESSORngsp

THE COST EFFECTIVE SOLUTION FOR PREMIUM DETECTION PERFORMANCE IN A CHALLENGING ENVIRONMENT

VCC

TRUE 3DWINDFARM MITIGATION

ADVANCEDECCM

WEATHER DETECTION

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ngsp

NGSP IN SLEPS

The NGSP is the result of many years of on-site experience, measuring on radar systems and performing in depth performance analysis and fault-finding. It's a materialization of built up knowledge and an application of state-of-the-art technology to radar signal processing.As the core of SLEPs and radar upgrade programs, the NGSP is more than the sum of the hardware and the patented software algorithms. NGSP is the key to an economical service life extension that improves detection performance and makes the system compliant to the emerging challenges opposed by changes in the radar environment.

ADDED VALUE

• IMPROVED PERFORMANCE on detection by using new and advanced processing algorithms: Pulse Compression, VCC, Median Filter, MTD, 3D;

• COST EFFECTIVE solution to alleviate component obsolescence, avoiding soaring maintenance and support costs; • QUICK, YET HIGH QUALITY INSTALLATION without operational impact thanks to autotuning and remote support concepts; • MODULAR design compatible with NGTX and other third party radar subsystems;

• DEMONSTRATION of the NGSP system on request, whilst running in parallel with existing systems is possible.

TECHNOLOGY OF THE FUTURE

In the rapidly growing presence of wind farms and 4G/LTE coverage, it is of utmost importance to cope with highly dynamic clutter environments and to allow 4G/LTE interoperability. Intersoft’s NGSP includes its patented Vertical Clutter Cancellation – VCC, which reduces clutter while maintaining the sensitivity on targets. Unstable clutter produced by objects such as wind turbines is cancelled to inconsequential levels. NGSP offers protection against interference and jammers. Electronic counter-countermeasures (ECCM) options are available for military radar systems.

• 3D height makes it possible to separate the wanted from the unwanted targets. The phenomenon of angels producing many false plots can be filtered out. Also birds and drones can be detected easily. Finally a classification of these unwanted targets becomes possible.• Weather detection is an option when dual beam processing is used. Weather data can be outputted in six levels according to the National Weather Service standard dBZ values, format ASTERIX CAT 008. The weather processor uses different calibration tables and beams, which combine to mitigate the effects of environmental screening on site and anomalous propagation.• Recording and playback of radar data makes it possible to further investigate and analyze certain events. Recordings can be viewed and analysed with our dedicated RASS software tools.

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► The IF Signal Processor (ISP) module is the heart of the system and is specifically designed to perform digital process-ing of analog IF video. Primary plots at beam level are output to the Radar Data Processing Server (RDPS).The IF and subsequently processed data can be recorded to hard disk providing off-line data processing for detailed analysis during system tuning and trouble shooting.

► The Radar Data Processing Server (RDPS) combines the digital plot outputs from multiple beams into a single plot and combines the primary and secondary plots. The False Plot Analyzer (FPA) runs on the RDPS and processes all plots to identify false plots by flagging them.

► The Video Signal Processor (VSP1071) decodes SSR replies and locates the replying aircraft with an accuracy that is compatible with the PSR digital plot data. It inputs raw video data and outputs plot, status and control data to the RDPS.

► The Radar Adaptation Box (RAB) is required for legacy systems and interfaces with the radar timing and control signals.

► The System Control Unit (SCU) will coordinate the tim-ing of the system and connects to the radar antenna system via the Radar Adaptation Box (RAB). In a redundant setup two units are applied where one channel will act as master and the other as by-pass. It Interfaces with the GPS timeserver and distributes the PPS signal used for UTC synchronization.

► The Distribution and Monitoring Unit (DMU) has three main functions. It distributes the timing, clock and monitoring signals. Secondly it distributes power through the power bus con-nections to other units which do not have an internal power supply. Finally it provides hardware monitoring points for critical system signals for maintenance purpose.

► The Dual RF Receiver (DRX) is a dual-channel frequency downconverter which converts RF signals to an IF output at 10MHz. The dual channels normally correspond to two antenna beams. Different types of receivers are available.

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BUILDING BLOCKS

Intersoft’s NGSP is a versatile radar signal processing suite which can be used on various PSR, SSR and combined PSR/SSR systems, for both military and civil aviation applications. It provides capabilities ranging from dual-beam, short-range Airport Surveillance Radar (ASR), to stacked-beam, 3D long-range air surveillance Radar with cutting edge ECCM capabilities. Depending on the Radar system a different configuration may be applied.

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ISP1066

ISP HARDWARE : A SOLID GROUND

The hardware embedded in the ISP provides the platform for the high performance software algorithms processing the input IF Video. The ISP is offered as an OEM solution in a 19” 3RU form factor. It has four IF Video input channels and it outputs primary plots on Gigabit Ethernet. Typically, a main and an auxiliary beam are input while the two spare inputs are used for Radar Environment Simulator (RES) purposes, however other configurations are possible too. Thanks to four corresponding IF Video outputs the ISP's can be stacked for radars using more than two elevation beams.

14-bit analogue to digital convertors (ADC's) feed digital video to the I/Q down convertors on the FPGA board. The FPGA down converts, filters, modulates and mixes the digital signals and sends them to the embedded PC via internal LAN. The FPGA firmware is modular and tailored to the targeted video inputs (I/Q or any IF frequency up to 60 MHz). Timing signals (ACP, ARP and Trigger) and a reference clock are needed for synchronization. Powerful algorithms run on the embedded Commercial Of The Shelf (COTS) quad-core PC for extracting targets. Primary plots are output to the RDPS917 via the Gigabit Network Interface Card (NIC).

Before processing, the raw video can be recorded to hard disk on operator command. This feature is of major interest for detailed analysis and problem solving and is the essence of Intersoft Electronics' Closed Loop Installation Concept (CLIC).

ISP1066 Features

Inputs/Outputs• 4 analogue i/o (main – aux – 2 spare), SMA• clock i/o, SMA• timing i/o, DB15• 1000BASE-T Gigabit Ethernet

General• 19” enclosure - 3U plug-in box with front handles, dimensions WxHxD (mm): 435,8x 126,5x360• Build-in watchdog module based on a micro-controller. System error led on front-panel• 3rd generation Intel® CoreTM i7-3610QE (6MB Cache, up to 3.3GHz, 45W)• Front accessible disk trays• Redundant power supply

IF Video Primary PlotsI/Q VideoADC NIC

FPGA• I/Q Downconvert• Bandpass Filter

Embedded PC• Pulse Compression• VCC + Median• 16-bin MTD• CFAR

ISP1066 - Functional Blockdiagram

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Accumulated video before VCC

Accumulated video after VCC

ASR-M - Windfarm mitigation of a cluster of five turbines at 8nm, (left image pulse compressed returns, right image after VCC and median processing) >30dB target improvement factor (with pulse integration),excellent range resolution and time side lobes <60dBc

ISP SOFTWARE: NEXT GENERATION SIGNAL PROCESSING

Thanks to its powerful hardware, the ISP is able to run high performance algorithms pushing the limits of radar data processing sky high. Before plot forming and plot combining/filtering four dedicated software blocks process the video data:

The pulse compression is implemented in a Fast Fourier Transform (FFT) method and windowed mismatched filters are used for time side lobe suppression. The MTD with 16-bin Doppler facilitates the isolation of static clutter and the CFAR takes the history of the signal into account in order to set a variable threshold. These algorithms all add to the gain of the ISP but the major improvement compared to existing radar signal processors comes from VCC.

VCC and median filtering are the key to get better performance out of MTD and CFAR processing. This means that primary radar can rival with secondary radar both in detection and accuracy. As such the NGSP guarantees that our customers get top performance out of their upgraded radar.

• Pulse Compression with time side lobe suppression• Clutter Canceller (VCC) with median filter• Moving Target Detector with 16-bin Doppler (MTD)• Continuous False Alarm Rate (CFAR)

VCC is a patented Vertical Clutter Canceller which reduces clutter while maintaining the sensitivity on targets. Unstable clutter produced by objects such as wind turbines is completely cancelled. As such VCC is the ideal solution for wind farm mitigation.VCC utilizes a self-tunable smart antenna technique in which a lower beam serves as a reference for its higher beam to cancel clutter. The resulting clutter free signal can then be processed using advanced image processing techniques like median filtering allowing disturbances from other radars and RF sources to be removed before MTD processing. MTD performs much better because it can work on cleaner radar video data.

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WINDFARM MITIGATION

WEATHER, BIRD & DRONE DETECTION

ADVANCED ECCM

CANCELLATION of ELECTRO-MAGNETIC SMOG and 4G/LTE INTERFERENCE

TRUE 3D for all ASR

IMPROVED PERFORMANCE ON DETECTION

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RASS-R tools for displaying analysis and networking

IF

ASTERIX (or any format)

IE's Modular NGTX

LAN

RASS-S tools for radar tuning and assessment

TxRx

FROM ANTENNA TO ASTERIX and further

Intersoft Electronics' RASS tools are designed to measure the radar performance according to a top-down philosophy, from top to bottom, from antenna to controller. This top-down approach forms the basis for our radar upgrade solutions focussing on radar data processing from antenna to ASTERIX or any other format. Intersoft Electronics radar upgrade solutions are founded on and complementary to the established RASS tools.

MODULAR DESIGN

At the same time, the NGSP is developed according to a modular design making it versatile for applications on different types of radar. Single or dual channel configurations are possible as well as interfacing on RF or IF level. Different types of receiver solutions are available as well as the IE proprietary NGTX, a solid state transmitter solution developed according to the same modular design concept.

3. slep & upgrade concepts

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CLOSED LOOP INSTALLATION CONCEPTS

The Closed Loop Installation Concept (CLIC) relies on modern communication methods to ensure a quick yet high quality commissioning, training and support. Protected internet or satellite connections bring the specialists virtually on site. During the installation phase, a limited number of engineers go physically on site and they can easily instruct many experts at the office to take care of specialist jobs. When IE engineers have left, the site technicians can get in touch with IE to get support. In this way, site personnel is trained in a highly practical way, complementing to the formal training.This concept also allows IE to offer a service of remote software updates and performance analysis, not only during commissioning but also afterwards as part of the maintenance activities. The main benefits of the CLIC are a most optimal use of resources, resulting in cost savings and a quick familiarization of the site technicians with the new system, leading to better performance and early and correct interventions.

SHADOW MODE VALIDATION CONCEPT

When factory testing is completed, IE engineers go on-site to provide formal training and initiate the installation in shadow mode. In this mode the upgraded system runs in parallel with the original system, without influencing the radar's operation. The main benefits of this concept are that the system can be validated thoroughly against the legacy system and system requirements and site technicians can experiment without affecting operations or requesting expensive downtime. Typically, some site-specific oddities occur in this period of intensive testing. The CLIC allows IE engineers to respond quickly to user demands and even perform detailed analysis or software updates.

legacy system

operations control new system

local testing and validation

4. capabilities

Old PAR80 display

New PAR80 display software,3D view where red represents

low clutter, blue high clutter

On request of the German Air Force, Intersoft Electronics accepted a project to improve the performance of the PAR 80 Precision Approach Radars. The PAR Display Upgrade (PDU830) was designed to overcome the drawbacks of the old CRT displays, being degradation of visibility and component obsolescence. Over 30 PAR 80 systems were successfully upgraded.

The Thomson TA-10 upgrade was one of Intersoft Electronics' first radar upgrade experiences back in 2007. It was carried out under NATO contract for the Belgian Air Force (BAF). The Primary Radar Extractor (PRE790) together with a processing PC was the predecessor of the NGSP. The TA-10 upgrade was the kick-off for the development of the NGSP, making it the obvious choice for ASR as well as 3D radar upgrades and data recorder-processor for any radar. In total, three TA-10's were upgraded, which are currently being overhauled with the newest NGSP technology.

PRECISION approach TERMINAL - PAR/tar

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firefinder - TPQ

AN/TPQ-36 Upgrade Features

• Service Life Extension of minimum 15 years• Easy installation and restoration of original configuration• Elimination of existing shelter and quick set-up• Single box RUP with single 55pin connector for digital I/O and SMA connectors for IF/LO, dimensions WxHxD (mm): 600x200x120• Increased number of transmissions and dynamic mode switching in friendly fire zones• Easy to use CAM software with 3D graphical map display, video & clutter map window and support for GeoTIFF, DTED, MetCM• Improved Auto Terrain Following capabilities• User controllable threshold level for small fire arms• RAW data logging function for offline processing, replay and training purposes• Possibility to “learn” new weapons based on RAW recordings• Enhanced maintenance functionalities for easier fault finding and debugging• Increases operate to trailer distance using optical cabling

Optional• Output of DAMA C2 (Defence Against Mortar Attacks Command and Control)• Common coverage of multiple systems in case of compound protection (Frequency Sharing)• Control multiple systems from a single MMI (Multi Radar Mode)

Intersoft Electronics upgrade of seven AN/TPQ-36 radar systems for the Royal Netherlands Army (RNLA) under a NATO Service Life Extension Program (SLEP). FireFinder radars in particular need to be highly mobile, fast deployable and controllable from a safe distance. These requirements led to the development of the Radar Upgrade Processor (RUP) and the Man Machine Interface (MMI) for the AN/TPQ-36. These products essentially eliminate the need for the existing radar shelter.

The RUP interfaces with the analogue and digital signals. Embedded COTS components (FPGA, Quad-core processor) take care of I/Q demodulation and all the data processing including plot detection, projectile tracking, beam scheduling and build in test (BIT) processing.

A RAW data recorder is essential for system support through data analysis and also allows for adding support for new weapons by adding their track information to the ballistics database. The outputs of the data processing blocks are streamed towards the MMI.

The MMI is a ruggedized portable workstation and provides the Control And Monitor (CAM) interface for the operator. Plot and track streams are displayed on a GeoTIFF map background and raw video is represented on a B-scope or the clutter map used inside the RUP processor.

The interconnection between the RUP and the MMI workstation is established through a single Ethernet cable, allowing for CAM at a safe distance.

LONG RANGE 3D - martello

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Passive DemarcationPanel

Local Maintenance Workstation with Multi Radar Display (MRD3) and Control And Monitor (CAM) with BITE, JAR and ECCM control

Compact Signal Processing Solution for 3D Radar replacing existing shelter

ATC network

In 2009 NATO awarded Intersoft Electronics the upgrade of several Martello S723-743D radar systems under a Service Life Extension Program (SLEP). The core of the upgrades consisted of a stack of ISP's. The upgrade successfully addressed all requirements of NATO's SLEP as well as providing significant performance gains in Probability of Detection (Pd), range/azimuth accuracy and range/azimuth resolution better than the original manufacturers specifications.

IE's upgrade for the Long Range 3D Martello systems can be delivered in a single 42 units high 19-inch rack, replacing all processor and radar data communication equipment. The system interfaces with the IF beams and control and monitor signals in the spine by means of a Passive Demarcation Panel (PDP).

The key modules of the Signal Processor are a battery of IF Signal Processors (ISP's), a Master Control Unit (MCU) and Radar Data Processing Servers (RDPS's). ISP's process the IF beams and output plot data to the RDPS. This unit combines the beam plots to primary plots and inputs the SSR data for combining as well. SSR plots are extracted by the Video Signal Processor (VSP). From the RDPS, ASTERIX (or any other format) is output to the local and remote workstations as well as the communications equipment putting data on the ATC network. Secondary video can also be displayed thanks to the Radar Interface Module (RIM).

This solution can also be build in into the existing shelter and is available for Martello types and ARSR-4 types.

S723/743D Upgrade Features

• Number of ISP894 units scalable versus number of beams• Master Control Unit (MCU950) for overall control and timing• Time server for GPS time synchronization• Radar Data Processing Server (RDPS917) supporting 3D height calculation• KVM accessibility• 1000BASE-T Gigabit Ethernet connection to ATC network• GUI with easy configuration of data output in any format (ASTERIX, …)• Control And Monitor (CAM) with technical display on Maintenance Workstation (MWS)• Combiner function with optional upgrade of SSR mode-3A/C extractor• All integrated in optional 19inch rack or mounted in existing radar shelter• Optional integrated UPS system• Optional Radar Environment Simulator

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Portable Demonstrator for TPS types

Interfacing of beam signals on TPS Selector Card

Tactical radars, like the TPS-70/75 types, are transportable, compact systems that use passive 3D electronically scanned array techniques on an Ultra Low Sidelobe Antenna (ULSA). Intersoft Electronics offers SLEP solutions for this kind of Tactical Radar systems, addressing specific challenges posed by the compactness, transportability and the applied scanning techniques.

The hardware for the TPS upgrade is limited to a dual 9 units high 19-inch rack setup. This is an exceptional compactness for a stacked beam 3D radar, allowing easy integration into the original shelter. Integration is required as the TPS is a transportable tactical radar system.

The basic setup is similar to that of the Long Range 3D upgrade: interface unit, signal processor, display. The TPS upgrade makes use of the standard NGSP modules which are also used for ASR type programs. This standardization, as well as the compactness of the system, can be achieved thanks to the ingenious dual interleaved frequency processing. This technique allows a single ISP to process three beams on two frequencies in parallel. Median Filtering and VCC are the key software algorithms of NGSP, allowing Advanced ECCM capabilities on TPS types.

The NGSP interfaces with the beam signals by means of the IF Receiver Unit (IRU). The IRU taps into the beam signals on the IF Selector Card and converts the signals to the appropriate frequency for the ISP's. A compact display device such as a laptop or desktop pc with dual monitors can be used for local and remote display with Control and Monitoring (CAM) and Humane Machine Interface (HMI) for configuration of ECCM functionalities.

TPS Upgrade Features

• Dual Interleaved Frequency Processing• NGSP Technology• Vertical Clutter Canceller• Windfarm mitigation• Advanced ECCM capabilities thanks to Median filtering• 3D processing with target size indication• Number of ISP1066 units scalable versus number of beams• System Control Unit and Distribution Monitoring Unit for overall control and timing• Time server for GPS time synchronization• Radar Data Processing Server (RDPS917) • 1000BASE-T Gigabit Ethernet connection to ATC network• GUI with easy configuration of data output in any format (ASTERIX, …)• Control And Monitor (CAM) for controller and technician on Maintenance Workstation (MWS) or laptop• All integrated in optional 19inch rack or mounted in existing radar shelter

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l-band en-route radar - sre-m

In 2016, the Belgian Airforce (BAF) contracted Intersoft Electronics for a GAP filer solution in the Belgian Ardennes. This GAP filler solution was realized as an SRE-M L-band PSR radar upgrade.

The IE's L-band PSR hardware can be delivered in a single 42 unit 19-inch rack setup, replacing all transmission, processing and data communication equipment. Due to its compact design, the system also allows an easy integration into an original shelter.

SRE-M Upgrade Features

• Dual Interleaved Frequency Transmission and Processing• NGTX and NGSP Technology• Solid State Transmission unit• Vertical Clutter Canceller• Radar Data Processing Server (RDPS917) supporting 3D processing• Advanced ECCM capabilities thanks to Median filtering• Time server for GPS time synchronization• 1000BASE-T Gigabit Ethernet connection to ATC network• Control And Monitor (CAM) for controller and technician on Maintenance Workstation (MWS) • All integrated in an optional 19inch rack or mounted in existing radar shelter

The key modules of the setup are the modular solid state transmitter unit (NGTX), a IF Signal Processor (ISP), a System Control Unit (SCU) and a Radar Data Processing Server (RDPS). The ingenious dual interleaved frequency transmission and processing (NGSP) allows the ISP to process two beams on two frequencies. Additionally, advanced ECCM capabilities are allowed by the NGPS's VCC and median filtering. The RDPS combines the individual beam plots into 3D primary plots. SSR data may be imported as well. From the RDPS, ASTERIX is output to the local and remote workstations as well to the communication equipment putting the data on the ATC network.

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Intersoft Electronics has a standard solution for SLEP on airport surveillance radar (ASR) which has been applied by customers worldwide, one of them being the FAA.In the Common Terminal Digitizer (CTD) project, Intersoft supplies the core technology with dual channel NGSP systems, interfacing on RF and processing all the way to the digital data outputs.

With the NGSP, not only the digitization of outputs is realized but also the detection performance improves, obsolescence issues are tackled and the ASR-8 fleet is well equipped for sustained operations for over 10 more years. Moreover, emerging issues like wind farm mitigation and electromagnetic pollution are addressed as well.

airport surveillance - ASR

NGSP in Dual Channel CTD Configuration for 41 ASR-8 systems at FAA.

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SSR Video

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The PSR subsystem consists of the signal conditioning modules (SCU-DMU), a dual beam receiver (DRX), and an IF signal digitizer module (ISP). The SCU and DMU buffer the signals that are tapped from the PSR and SSR radar to ensure no interference with legacy operation. The DRX is fed with the RF signals from the high and low beam of one of the two radar channels. It down converts the RF signals to IF using the COHO and STALO oscillator signals retrieved from the original ASR Rx cabinet. This IF signal is continuously sampled together with the timing signals and the radar Tx trigger signal. The digitized IF signal (I and Q signals) are then passed through a digital receiver design for stable bandpass filtering, and several steps of software extraction, including clutter filtering, the patented VCC algorithm to remove dynamic clutter and jammers, CFAR, 16 channel MTD and pulse detection.

The SSR subsystem is used to digitize SSR video signals (SUM and SLS) into reply and plot digital messages. It shares the signal conditioning and distribution modules (SCU-DMU) with the PSR subsystem and has a Video Signal Processor (VSP) which is fed with the buffered SSR interrogation trigger signal (including the interrogation mode), ACP-ARP for antenna azimuth pointing and two video signals: SUM and SLS video.

The RDPS is used to combine, correlate and convert the LAN data sources from the VSP, the ISP and the Mode S system (when present) into a single Cat 48 ASTERIX data stream message which can be converted to any desired format.

RF

Dual Radar Receiver (DRX)

Dual SSR Receiver (DSR)

IF

Low Beam

High Beam

ngspNGSP technology and concepts are key to IE's Radar Upgrades and SLEP's. It is supported by our world-wide respected RASS tools and integrated test benches as well as by technology driven concepts enabling quick, high quality and economic delivery while maintaining radar operability.

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PAR80 - PRECISION APPROACH S723 - 743D - LONG RANGE 3D TA-10 - TERMINAL APPROACH

TPQ-36 - FIRE FINDER TPS-43/70/75 - TACTICAL RADAR ASR-8 - AIRPORT SURVEILLANCE

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REFERENCES

MILESTONE PROJECTS

2015 Common Terminal Digitizer (CTD): SLEP on 41 ASR-8 / Mode-S / BI-5 combined systems for FAA

2012 3 S743D SLEPs for Hellenic Air Force and S723 SLEP for Belgium Air Force under NATO contract

2009 7 TPQ36 SLEPs for Royal Netherlands Army under NATO contract 2008 28 PAR80 Radar Upgrade for German and 3 for Belgium Air Force

2006 TA10 SLEPs for Belgium Air Force

DEMONSTRATORS

Intersoft Electronics maintains good relations with its customers and network partners enabling the opportunity for demonstrations and system evaluations. Apart from the milestone projects listed above, IE performed other radar upgrades and SLEP's on a variety of systems and has several demonstrator units available for different types of radars. One such demonstrator exists for the TPS family of tactical radar, another one is for Modular ASR. These units prove of invaluable benefit due to the ability of extensive testing and understanding of the system before contracting.

Please contact support@intersoft-electronics

for more information

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Lammerdries-Oost 272250 OlenBelgiumwww.intersoft-electronics.comsupport@intersoft-electronics.com

Intersoft Electronics NVHead Office

www.intersoft-electronics.comsupport@inventiveelectronics.com

Inventive Electronics Inc.US Office, Florida

Intersoft Electronics China

www.intersoft-electronics.com.cn

Intersoft Radar UK LtdUK Officewww.intersoft-radar.co.uksupport@intersoft-radar.co.uk

24

global presence

IE-CD00109-009 SLEP-Radar Upgrades