Volume 37 Issue 2
Mar.  2017
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DING Wenzhe, ZHANG Zhanyue, YANG Hong, CHEN Feng. Analysis of Line-of-sight Measurement Error for Satellite-borne Observation Platform[J]. Journal of Space Science, 2017, 37(2): 238-248. doi: 10.11728/cjss2017.02.238
Citation: DING Wenzhe, ZHANG Zhanyue, YANG Hong, CHEN Feng. Analysis of Line-of-sight Measurement Error for Satellite-borne Observation Platform[J]. Journal of Space Science, 2017, 37(2): 238-248. doi: 10.11728/cjss2017.02.238

Analysis of Line-of-sight Measurement Error for Satellite-borne Observation Platform

doi: 10.11728/cjss2017.02.238
  • Received Date: 2016-01-27
  • Rev Recd Date: 2016-11-11
  • Publish Date: 2017-03-15
  • A line-of-sight measurement error modeling and evaluation method based on multi-parameters is studied to analyze the influence of the error sources of the satellite-borne observation platform on the line-of-sight measurement accuracy. Unlike conventional measurement for satellites and space camera, the target imaging model from target position to focal plane and the line-of-sight measurement model for satellite-borne observation platform are constructed on the basis of the satellite, turntable, and camera observation structure. The relationship between the measurement error and the error sources is derived theoretically and a method of error evaluation based on sensitivity analysis is presented. In three axial directions, the influence of the error sources of the satellite-borne observation platform on the line-of-sight measurement accuracy are analyzed. Monte Carlo simulation verified the validity of the theoretical model. The results demonstrate that the line-of-sight measurement accuracy is affected by satellite orbit error, satellite attitude error, load platform angular vibration error, inner frame and outer frame rotation error, image points position quantization error. The method can scientifically evaluate the influence of various error sources on measurement accuracy, and has important application value to the overall design of the satellite-borne observation platform.

     

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