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测绘学报  2015 

航空重力测量在近海区域的精度评估与分析

DOI: 10.11947/j.AGCS.2015.20130783, PP. 1-5

Keywords: 航空重力测量,泊松积分,点质量模型,精度评估

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Abstract:

利用泊松积分法和点质量法对澳大利亚WestArnhemLand区域的航空重力测量数据进行了精度评估,两种方法得到精度结果基本一致,评估结果表明GT-1A测量系统2'分辨率数据的测量精度优于3×10-5m/s2,5'分辨率数据的测量精度优于2×10-5m/s2.利用交叉点平差和泊松积分法、点质量法对渤海区域的航空重力测量进行了内部交叉点平差和外部精度评估,结果表明,内部评估精度与外部评估精度存在一定的差异,以外部评估为准则,CHAGS测量系统在渤海区域5'分辨率的航空重力数据精度优于3.5×10-5m/s2.综合国内外试验情况分析得到,在近海区域,航空重力数据的分辨率和精度受测量仪器的性能而不同,整体上对于5'分辨率数据而言,可以达到或优于3×10-5m/s2的精度.

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