Design and analysis of sub-index of high precision Airborne Gravity System
Hong ZHANG1, Jin-Hong QU2,3, Zuo-Xi JIANG2,3, Meng WANG3, Xing-Su LI2,3
1. Beijing information technology School of Information Management, Beijing 100092, China 2. Key laboratory of Airborne Geophysics and Remote Sensing Geology, Ministry of Natural Resources, Beijing 100083, China 3. China Aero Geophysical Survey and Remote Sensing Center for Natural Resources, Beijing 100083, China
为研制高精度航空重力仪,开展了高精度航空重力仪分项指标设计与分析,为高精度航空重力测量系统设计提供依据。笔者基于航空重力测量的数学模型,归纳出影响航空重力测量的主要因素;结合航空重力测量的相关理论公式,使用理论模型,推导出各影响因素的误差模型;开展了各项误差的分析研究,并通过设定合理的分项指标精度来有效地控制分项误差,确保航空重力测量精度优于0.6×10 -5 m/s 2。
In order to meet the needs of development of high-precision airborne gravimeter , the sub-index design and analysis of high-precision airborne gravimeter were carried out, which provided the basis for the design of high-precision airborne gravimeter system. Based on the mathematical model of airborne gravimetry, this paper summarizes the main errors affecting airborne gravimetry, uses the theoretical model formula, deduces the error models of various influencing factors, and carries out the analysis and study of various errors, and sets reasonable sub-index by combining the relevant theoretical formula of airborne gravimetry. Accuracy can effectively control the sub item errors and ensure the accuracy of airborne gravity measurement is better than 0.6×10 -5 m/s 2.
Xiong S Q . The present situation and development of airborne gravity and magnetic survey techniques in China[J]. Progress in Geophysics, 2009,24(1):113-117.
Wang J B, Xiong S Q, Zhou X H , et al. The advances in the study of the airborne gravimetry system[J]. Geophysical and Geochemical Exploration, 2009,33(4):368-373.
[3]
Glennie C, Schwarz K P . A comparison of stable platform and stapdown airborne gravity[J]. Journal of Geodesy, 2000,( 74):383-389.
doi: 10.1007/s001900000082
[4]
Brozena J M, Peters M F . State-of-the-art Airborne Gravimetry [A]. In Gravity and Geoid: Joint Symposium of the International Gravity Commission and the International Geoid Commission, Graz, Austria: Springer, Berlin, 1994, ( 113):187-197.
[5]
Gabell A, Tuckett H, Olson D . The GT-1A mobile gravimeter [A]. In ASEG-PESA, Airborne Gravity 2004 Workshop, 2004: 55-61.
[6]
Yang N H, Arne V O, Mei P W . SGA-WZ: A New Strapdown Airborne Gravimeter[J]. Sensors 2012, 2012,12:9336-9348.
[7]
孙中苗 . 航空重力测量理论方法及应用研究[D]. 郑州:解放军信息工程大学, 2004.
[7]
Sun Z M . Theory, methods and applications of airborne gravimetry[D]. Zhengzhou: Information Engineering University, 2004.
Wang L H, Zhang C D, Wang J Q , et al. Mathematical models and accuracy evaluation for the airborne gravimetry[J]. Journal of Geomatics Science and Technology, 2008,25(1):68-71.
Xiong S Q, Zhou X H, Guo Z H , et al. Theory, method and application of the airborne gravity prospecting[M]. Beijing: Geological publishing House, 2010.
Zou X L, Cai S K, Wu M P , et al. Dynamic errors separation of airborne gravimetry based on empirical mode decomposition[J]. Geophysical and Geochemical Exploration, 2016,40(6):1217-1221.
[12]
Bolotin Y V, Popelensky M Y . Accuracy analysis of airborne gravity when gravimeter parameters are identified in flight[J]. Journal of Mathematical Sciences, 2007,146(3):5911-5519.
Luo F, Guo Z H, Luo Y , et al. Experimental researches on FIR low pass filter based on equiripple[J]. Geophysical and Geochemical Exploration, 2012,36(5):856-860.
Guo Z H, Luo F, An Z F . Experimental researches on FIR low pass digital filters based on window functions of airborne gravity data, 2007,31(6):568-571, 576.
Wang J B, Xiong S Q, Guo Z H , et al. Estimation of the vertical acceleration for the airborne gravimetry using Kalman smoothing[J]. Progress in Geophysics, 2010,25(3):968-974.
Wang L H, Zhang C D . Analysing the accuracy of measuring velocity for the airborne vectror gravity survey according to coriolis acceleration[J]. Hydrographic Surveying and Charting, 2008,28(2):1-4, 8.
Qu J H, Guo S R, Zhou X H , et al. The correlation analytical method and its application to GT aerogravimeter drift correction[J]. Geophysical and Geochemical Exploration, 2016,40(4):838-842.
[18]
Bar-Itzhack I Y, Berman N . Control theoretic approach to inertial navigation systems[J]. Journal of Guidance, 1988,11(3):237-245.
[19]
Berzhitsky V N, Iljin V N, Saveliev E B , et al. GT-1A inertial gravimeter system design consideration and results of flight tests [C]// In Proc.2002, 9th Saint-Petersburg Int. Conf. on Integrated Navigation Systems, Russia, St. Petersburg.
Sun Z M . Establishment and preliminary analysis of error model of aeronautical vector gravity measurement[J]. Surveying and Mapping Science and Technology, 1998,98(4):1-7.
[22]
孙中苗 . 航空重力测量精度估计[J]. 测绘科技, 1999,46(1):29-34.
[22]
Sun Z M . Accuracy estimation of airborne gravimetryJ]. Surveying and Mapping Science and Technology, 1999,46(1):29-34.
Xiao Y . Determination of velocity and acceleration of moving carrier based on GPS double difference phase rate[J]. Journal of PLA Institute of Surveying and Mapping, 1999,19(1):61-64.