文章基本信息

标题：The Systematic Approach to Flying for Aerial Survey in Sri Lanka First Experience with the new Cessna 421
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作者：F.-J. HEIMES ; M.P. SALGADO ; P. HEENKENDA 等
期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：1980
卷号：XXIII Part B11
页码：1-4
出版社：Copernicus Publications
摘要：In those cases where the so called on-the-job-training methods in flying for aerialsurvey cannot be applied a systematic approach to the problem is the only solution.To ensure succesYful operation of the new, well equipped and pressurized Cessna 421survey aircraft for Sri Lanka this systematic approach is to be followed from the very beginning.The fact that reliable topographic maps at scale 1 : 50000 do exist of the whole islandand the fact that enough details are recognizable from the air means that no sophisticatedand expensive navigation systems like Doppler or INS ore needed but that visualnavigation is possible.For that a navigation telescope of the type Wild NF 28 o low priced magnetically slaved gyrocompass are the basic instruments, beside& this the Cessna is equipped with a standardmodern autopilot. The A.P. proved to be very suitable to control the aircraft duringsurvey flight procedures. This fact was of great importance because the aircraft is flownby non-survey-experienced air force pilots.To be able to apply systematic survey flight procedures some in-flight calibration isnecessary. Because of the fact that navigation on maps is possible in Sri Lanka partialcalibration is sufficient. For the new Cessna 421 the calibration was combined with thegeneral test and acceptance flight.In the following the calibration results are presented