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1) GPS is a weak signal and can be jammed or spoofed. 2) Your satellite imagery might not be accurately aligned to the coordinated system. If you want to land
by jws 11y ago
1) GPS is a weak signal and can be jammed or spoofed.
2) Your satellite imagery might not be accurately aligned to the coordinated system. If you want to land on a little flat spot, then doing it visually will work even with misaligned imagery.
- acveilleux 11y agoI'm sure the NRO can source some really accurate satellite and drone based terrain imagery if needed.
- fapjacks 11y agoMaybe, but the cost in that infrastructure is the bureaucracy of getting that data to the machine doing the dropping. There is a huge walled fortress surrounding imagery acquisition and analysis that would make tunneling that information to the airplane/drone in a timely manner very hard in its current form.
- dogma1138 11y agoYou don't need to use a coordinate system at all with scene match guidance. You can use what ever imaging you have since the guidance system calculates the position based on the position of known points in the scene. If you want to drop something you just pick the spot visually on the map and it will work better than gps. Visual guidance and INS are considerably more accurate than GPS when it comes to terminal guidance.