Use of GIS/GPS for supporting field enumeration · GPS/GIS) •A new EA map resulted with EA's...

Regional Workshop on the Use of Technology in Population and Housing Censuses in Arab countries,

Cairo - Egypt, 29-31 January 2018

Palestine

January 2018

Use of GIS/GPS for supporting field enumeration

Regional Workshop on the Use of Technology in Population and Housing Censuses in Arab countries, Cairo - Egypt, 29-31 January 2018

Old censuses

• In census 1997 and 2007, paper questionnaire were used

• Paper maps were used for locations and addressing

• Traditional data processing, data entry, coding and cleaning

• Takes long time period to finish data processing after fieldwork

• No complex ICT infrastructure needed

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Census 2017

• In census 2017, PCBS adopted using the new technology inimplementing the census fieldwork activities

• New technology means mobile applications supported withGPS/GIS

• A special set of mobile applications were produced to tacklethis issue

• GPS/GIS was used in all census 2017 stages as an embeddedmodule in the applications

• Different usages of GPS/GIS in all census stages

• Using tablets supported by GPS/GIS technology enhanceddata quality



Census 2017

GPS/GIS heavily used in:

• Correcting and updating of basemap

• Fieldwork management andmonitoring

• A Guiding map for locationsused by fieldwork staff



Correcting and updating of base map

• Before census 2017 PCBS implemented a projectto digitize a base map

• Aerial photo map was used and last map versionwas 2014

• The project of digitizing implemented during theperiod 2008-2014

• Different geographical layers were digitized(localities borders, enumeration area, streets,buildings, landmarks, etc.)

• An integrated GIS database was established toserve future surveys and sampling frames



Correcting and updating of base mapUsing new technology (Tablets supported byGPS/GIS)

• The first stage of census 2017 dedicated forupdating the existing base map dependingon aerial photo 2015

• New aerial photo was obtained (2016)

• In the office, all geographical layers werereflected on the new aerial photo then thebase map layers were reviewed andcorrected.

• A special mobile application (one of thecensus applications) was produced for thefieldwork



Correcting and updating of base map…Using new technology (Tablets supported by GPS/GIS)

• Tablets supported with GPS receivers used to update thelocations and collect the data

• The period assigned for the updating stage was three months(October-December 2016)

• Approximately 300 persons were assigned to perform thefieldwork

• Then 20 days of office work spent to extend the 2007 EA’s tocover all areas in Palestine and to be match with 2017localities borders

• Fourteen employees worked in the office after finishing thefieldwork to re-divide the EA's



Correcting and updating of base map…Using new technology (Tablets supported byGPS/GIS)

• The ICT infrastructure for the GIS departmentwork was renewed and supported

• A final GIS database was produced and allnext census stages depended on this GISdatabase

• EA's re-divided upon the results of this stageand control data collected

• Each EA contains in average 150-180households



Correcting and updating of base map

…Using new technology (Tablets supported byGPS/GIS)

• A new EA map resulted with EA's boundariesand information demonstrated

• Next stages, needs and details, were designeddepending on the results of this stage

• In all next census 2017 stages, GPS modulewas embedded in the applications and one ofits uses was, if existed, correcting andupdating the base map and the GIS database



Fieldwork management and monitoring

• A central web application“Fieldwork Management System”designed based on the GISdatabase used to manage andmonitor the fieldwork

• Can be opened usingPC/Laptop/Tablet/Mobile

• The GIS database provided aclear vision of the work thatshould be accomplished in allcensus stages




The use of the “Fieldwork Management System” helped to design allcensus stages as:

• Identification of required staff for the fieldwork

• The skills and training needs of the fieldwork staff

• Determining the timetable of the project

• Optimized workload distribution among different types of fieldworkstaff

• The number and distribution of required regional offices

• Equipment and ICT infrastructure in the regional offices




Monitoring and control:

• GPS module was embedded in all census applications

• Each fieldworker (supervisor, crew leader, enumerator) assigned oneor more EA according to the work hierarchy

• All fieldwork activities were controlled and monitored by “FieldworkManagement System”





In the field:

• The information of all buildings and households inthe EA was uploaded on the tablet from the GISdatabase

• Each fieldworker can't work outside his assignedEA's (restricted by the EA uploaded)

• The questionnaire will not open unless thefieldworker stands in the allowed distance read byGPS receiver





…In the field:

• The application automatically recorded thefieldworker route (tracking system)

• Instructions sent to all fieldworkers tosynchronize the tables and send the data everytwo hours

• Supervisor/Crew leader/Local Director/HQ canmonitor the work progress

• They can also monitor data transmissions anddevices synchronization





…In the field:

• GIS database offer several types of workprogress tables/charts/maps

• Visual EA's maps with colored flags oneach building or EA to monitor thecompleteness of the EA's

• Direct intervention from any level of administration to perform amendments



A Guiding map for locations used by fieldwork staff

• The base map of each district (depends on theworking EA's) loaded on the tablets

• The GIS database for the district and the assignedEA's geo information loaded on the tablets as well

• The map used as a guiding map where trackingtool embedded in the application register theactual route of the fieldworker

• Using digital maps and GIS information enhancethe data quality and accuracy. Also saves time andefforts.



Thank you

17 26-Jan-18Use of GIS/GPS for supporting field enumeration

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