Use of GIS/GPS for supporting field enumeration

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Merilyn McDowell
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1 Regional Workshop on the Use of Technology in Population and Housing Censuses in Arab countries, Use of GIS/GPS for supporting field enumeration Palestine January 2018

processing, data entry, coding and cleaning Takes long time period to

2 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 2

Census 2017 In census 2017, PCBS adopted using the new technology in implementing the census fieldwork activities New technology means mobile applications supported with GPS/GIS A special set of

3 Census 2017 In census 2017, PCBS adopted using the new technology in implementing the census fieldwork activities New technology means mobile applications supported with GPS/GIS A special set of mobile applications were produced to tackle this issue GPS/GIS was used in all census 2017 stages as an embedded module in the applications Different usages of GPS/GIS in all census stages Using tablets supported by GPS/GIS technology enhanced data quality 3

4 Census 2017 GPS/GIS heavily used in: Correcting and updating of base map Fieldwork management and monitoring A Guiding map for locations used by fieldwork staff 4

Correcting and updating of base map Before census 2017 PCBS implemented a project to digitize a base map Aerial photo map was used and last map version was 2014 The project of digitizing implemented

5 Correcting and updating of base map Before census 2017 PCBS implemented a project to digitize a base map Aerial photo map was used and last map version was 2014 The project of digitizing implemented during the period Different geographical layers were digitized (localities borders, enumeration area, streets, buildings, landmarks, etc.) An integrated GIS database was established to serve future surveys and sampling frames 5

Correcting and updating of base map Using new technology (Tablets supported by GPS/GIS) The first stage of census 2017 dedicated for updating the existing base map depending on aerial photo 2015 New

6 Correcting and updating of base map Using new technology (Tablets supported by GPS/GIS) The first stage of census 2017 dedicated for updating the existing base map depending on aerial photo 2015 New aerial photo was obtained (2016) In the office, all geographical layers were reflected on the new aerial photo then the base map layers were reviewed and corrected. A special mobile application (one of the census applications) was produced for the fieldwork 6

Correcting and updating of base map Using new technology (Tablets supported by GPS/GIS) Tablets supported with GPS receivers used to update the locations and collect the data The period assigned for

7 Correcting and updating of base map Using new technology (Tablets supported by GPS/GIS) Tablets supported with GPS receivers used to update the locations and collect the data The period assigned for the updating stage was three months (October-December 2016) Approximately 300 persons were assigned to perform the fieldwork Then 20 days of office work spent to extend the 2007 EA s to cover all areas in Palestine and to be match with 2017 localities borders Fourteen employees worked in the office after finishing the fieldwork to re-divide the EA's 7

Correcting and updating of base map Using new technology (Tablets supported by GPS/GIS) The ICT infrastructure for the GIS department work was renewed and supported A final GIS database

8 Correcting and updating of base map Using new technology (Tablets supported by GPS/GIS) The ICT infrastructure for the GIS department work was renewed and supported A final GIS database was produced and all next census stages depended on this GIS database EA's re-divided upon the results of this stage and control data collected Each EA contains in average households 8

Correcting and updating of base map Using new technology (Tablets supported by GPS/GIS) A new EA map resulted with EA's boundaries and information demonstrated Next stages, needs and details, were

9 Correcting and updating of base map Using new technology (Tablets supported by GPS/GIS) A new EA map resulted with EA's boundaries and information demonstrated Next stages, needs and details, were designed depending on the results of this stage In all next census 2017 stages, GPS module was embedded in the applications and one of its uses was, if existed, correcting and updating the base map and the GIS database 9

Fieldwork management and monitoring A central web application Fieldwork Management System designed based on the GIS database used to manage and monitor the

10 Fieldwork management and monitoring A central web application Fieldwork Management System designed based on the GIS database used to manage and monitor the fieldwork Can be opened using PC/Laptop/Tablet/Mobile The GIS database provided a clear vision of the work that should be accomplished in all census stages 10

Fieldwork management and monitoring The use of the Fieldwork Management System helped to design all census stages as: Identification of required staff for the fieldwork The skills and training needs

11 Fieldwork management and monitoring The use of the Fieldwork Management System helped to design all census 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 fieldwork staff The number and distribution of required regional offices Equipment and ICT infrastructure in the regional offices 11

12 Fieldwork management and monitoring Monitoring and control: GPS module was embedded in all census applications Each fieldworker (supervisor, crew leader, enumerator) assigned one or more EA according to the work hierarchy All fieldwork activities were controlled and monitored by Fieldwork Management System 12

Fieldwork management and monitoring Monitoring and control: In the field: The information of all buildings and households in the EA was uploaded on the tablet from the GIS database Each

13 Fieldwork management and monitoring Monitoring and control: In the field: The information of all buildings and households in the EA was uploaded on the tablet from the GIS database Each fieldworker can't work outside his assigned EA's (restricted by the EA uploaded) The questionnaire will not open unless the fieldworker stands in the allowed distance read by GPS receiver 13

Fieldwork management and monitoring Monitoring andcontrol: In the field: The application automatically recorded the fieldworker route (tracking system) Instructions sent to all fieldworkers to

14 Fieldwork management and monitoring Monitoring andcontrol: In the field: The application automatically recorded the fieldworker route (tracking system) Instructions sent to all fieldworkers to synchronize the tables and send the data every two hours Supervisor/Crew leader/local Director/HQ can monitor the work progress They can also monitor data transmissions and devices synchronization 14

Fieldwork management and monitoring Monitoring and control: In the field: GIS database offer several types of work progress tables/charts/maps Visual EA's maps

15 Fieldwork management and monitoring Monitoring and control: In the field: GIS database offer several types of work progress tables/charts/maps Visual EA's maps with colored flags on each building or EA to monitor the completeness of the EA's Direct intervention from any level of administration to perform amendments 15

A Guiding map for locations used by fieldwork staff The base map of each district (depends on the working EA's) loaded on the tablets The GIS database for the district and the assigned EA's geo

16 A Guiding map for locations used by fieldwork staff The base map of each district (depends on the working EA's) loaded on the tablets The GIS database for the district and the assigned EA's geo information loaded on the tablets as well The map used as a guiding map where tracking tool embedded in the application register the actual route of the fieldworker Using digital maps and GIS information enhance the data quality and accuracy. Also saves time and efforts. 16

17 Thank you 17

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