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Old 30th Dec 2007, 19:43
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cwatters
 
Join Date: Dec 2001
Location: England
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Google suggests it involves a lot of low level work...

http://www2.ogs.trieste.it/eageseg/e...rs/C_PP_06.pdf

Quote:

"...survey speed of 15.0 m/s. The nominal survey altitude is 1.5 m to 3 m above ground level (AGL). Coverage rates are 150 - 300 hectares per day"
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