Archive: October 2026

RTK vs PPK for Drone Surveying

The aircraft logs four files during the flight: an .obs file (raw satellite observation data in RINEX format), a .nav file (satellite ephemeris data), a correction log from the base station in RTCM format, and an .mrk file recording the exact timestamp of every image exposure.

Drone Safe Store Oct 2, 2026

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What Is PDRA01?

PDRA01, Pre-Defined Risk Assessment 01, is a Specific Category Operational Authorisation with its risk assessment already completed by the CAA.

Drone Safe Store Oct 1, 2026

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DJI Mavic 4 Pro vs Mavic 3 Pro

A 100MP sensor at variable aperture gives the Mavic 4 Pro genuine exposure control the Mavic 3 Pro's fixed-aperture 20MP sensor doesn't have, closing down for bright midday shoots or opening up as light fades without relying on ND filters alone.

Drone Safe Store Oct 1, 2026

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