Ground truthing with aerial photography in Andhra Pradesh

Aerial imagery can help a survey team identify visible features before field work. It does not replace measurement, notice, record checks or the procedure in force for the particular resurvey.

Prepare before visiting the field

• Use the imagery, map and parcel data supplied for the authorised work.
• Review the current FMB, village map and available record extracts.
• Identify features that cannot be reliably read from imagery, such as obscured boundaries, cultivation changes, structures and disputed corners.
• Carry the prescribed forms, equipment and written instructions for the assignment.

At the site

1. Confirm location from reliable control or reference features.
2. Observe and measure boundary evidence where imagery is unclear or conflicts with the ground.
3. Record the observation, method, date, responsible team member and supporting record.
4. Record a disagreement or missing evidence as an issue for the prescribed process; do not resolve a title or boundary dispute informally.

After field observations

• Submit the field notes and measured information in the format required by the current programme.
• Keep a clear link between every changed feature and the evidence used to support it.
• Check any resulting map or correlation statement against the authorised record before it is used downstream.

Current-procedure reminder

Older resurvey material may name forms, software, organisations, deadlines or appeal arrangements that have changed. Confirm the current SOP, Gazette notification and departmental instructions before issuing a notice, collecting personal information or communicating a decision.

Related: AP land resurvey suite · GIS viewer