Choosing an appropriate pixel size

Quick reckoner

Altitude (ft)	Pixel size (m)
< 3000 ft	1m
3000 - 4000 ft	2m
4000 - 6000 ft	2.5m
6000 - 8000 ft	4m
> 8000 ft	5m

Note that you should look at the azgcorr output to get a good idea of what your actual pixel sizes are, e.g.:

...

Pixel spacing stats... along line...
   centre     min: 4.45 max: 5.04 ave: 4.64
   port       min: 0.35 max: 32.31 ave: 6.48
   starboard  min: 0.56 max: 35.08 ave: 6.77
   across line centre (pix 238): 4.11

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Add notes on:

• -g interpolation
• different sensor types and characteristics
  • specim non-square pixels (along track)