Seminar Ppt on Tidget( Tracking Widget - A Gps Advancement) by Nithin k Thomas
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Transcript of Seminar Ppt on Tidget( Tracking Widget - A Gps Advancement) by Nithin k Thomas
![Page 1: Seminar Ppt on Tidget( Tracking Widget - A Gps Advancement) by Nithin k Thomas](https://reader036.fdocuments.in/reader036/viewer/2022081602/54739212b4af9f982c8b458f/html5/thumbnails/1.jpg)
TRACKING WIDGET(TIDGET)
Nithin K Thomas
S7 E&I CEK
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Familiarization with GPS
Components:
1. Space Segment2. Control Segment3. User Segment or Receiver
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• Space Segment 24 satellites in 6 orbital planes. 30 satellites at present at 11000miles above earth.
• Control Segment Ground stations on earth. Monitors orbiting and performs clock corrections.
• Receiver Navigation and precise positioning. Timing and research projects.
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Positioning using Satellites
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ADVANCED FORMS OF GPS
Differential GPSusing two ground based receivers.
Carrier-Phase GPScarrier frequency is very high.
Augmented GPSuses one geostationary satellite
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Reasons for TIDGET
• For aircrafts, multiple stand alone GPS receivers are required.
• Power, mass and volume.
• Continuous link with satellites during navigation.
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TIDGET Architecture
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Multiple Antenna Installation for All -
Round Visibility
To achieve high accuracyTo prevent degradation of
GPS signals.
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TIDGET Hardware Assembly
• Three identical circuit boards.• One master and two slaves.
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Each board consists of :• Connectors:
1. Avionics host connection( power, control and data).
2. GPS antenna connection.3. Stack-thru connection.
• Low-Noise Amplifier.• Integrated GPS front-end.• CPLD with SRAM.• TCXO and Buffers.
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Hardware Performance• Snapshot receivedthrough antenna.
• RF to digital base-
band by integrated MASTERGPS front-end. UNIT
• GPS RF circuitrycontrolled by CPLD.
• Snapshot processed by the software.
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Software Processing
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Working of TIDGET in Brief
• Snapshot from satellite to Antenna.
• Low-Noise Amplifier.
• RF to digital by GPS front-end.
• Snapshot saved in the Buffer.
• Position determination using SDR.
• RF circuitry turned off till next snapshot.
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CONCLUSIONThe TIDGET Advantages:
• Average Power Consumption is very low.
• Continuous link with satellite not required.
• Thermal problems avoided (>50ms).
• Multiple snapshots can be stored in queue.
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THANK YOU