ADJUSTMENT OF GRAVITY NETWORKS BASED ON
WEIGHTED CONSTRAINTS
1）Xi’an Division of Surveying and Mapping，Xi’an〓710054
Abstract A method to solve a synthetic adjustment of absolute and relative gravity network using weighted constrains is presented.Robust estimation is applied to eliminate gross errors，and χ2 statistic is applied to a posteriori variance testing，and Student’s t test is adopted to test statistically the relevance of gravimeter’s parameters and to test whether the examination stations’ gravities are evidently changed.Some computing results show that，the ratio between the posteriori variance after adjustment and the priori variance of unit weight is 1.08，which satisfies a χ2 test，and the average error estimate of the unknown gravity values is ±13.6×10-8 ms-2，17 exterior examination stations’ gravities aren’t evidently changed.
Key words ：
gravity network
absolute gravity
relative gravity
weighted constraint adjustment
robust estimation
Received: 17 October 2013
Published: 21 April 2014
Cite this article:
Zhao Dejun,Zhang Minli,Wang Qiang et al. ADJUSTMENT OF GRAVITY NETWORKS BASED ON
WEIGHTED CONSTRAINTS[J]. jgg, 2014, 34(2): 124-127.
Zhao Dejun,Zhang Minli,Wang Qiang et al. ADJUSTMENT OF GRAVITY NETWORKS BASED ON
WEIGHTED CONSTRAINTS[J]. jgg, 2014, 34(2): 124-127.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2014/V34/I2/124
[1]
WANG Jianbo，WANG Jinnan，SUN Jie，QI Xinmin，LIU Xiangwei，GAO Wenzong. Extraction of Gravity Tide Correction Based on Sliding Singular Spectrum Analysis Method
[2]
LIU Jie,XU Keke,FANG Jian,ZHANG Weimin,DU Zongliang. Analysis of Crustal Deformation in the Southern Margin of the Qinghai-Tibet Plateau Based on Modern Geodetic Techniques
[3]
.
[4]
REN MinshuanSHANG Yongjie， ZHENG Wenke， KANG Shengjun，ZHAO Pi. Overview of the Adjustment Method of Laser FiberAlignment for Absolute Gravimeter
[5]
HU Yuanwang，ZOU Tong，ZHANG Li，MA Wugang. Analysis and Simulation of Two-Stage Ultra-Low Frequency VibrationIsolation System Based on PID Feedback
[6]
LEI Qiankun, ZHANG Jun, FAN Chengcheng, WU Yu, HUANG Kangyu. Method and Application of Anomalous Station Screening by Taking Account of Intraplate Deformation with Robust Estimation
[7]
SANG Peng, ZHANG Weimin, TIAN Wei, WU Xiaomin. Effect of Frequency-Stabilized Laser on Gravity Measurement of A10
[8]
CHEN Jianping，SHEN Yunzhong. An Improved Robust Estimation Algorithm for Correlated Observations
[9]
LI Shupeng,ZHANG Chunpeng,LI Guoyi,LU Hanpeng,WANG Fengji,WU Shuang. Influence of Groundwater Funnel on Relative Gravimetric Data in Changyi-Xinhe Area
[10]
DUAN Hurong,KANG Mingzhe,YAN Quanchao,WU Shaoyu,XIE Liu. Extraction of High-Precision Repeated Relative Gravity Observation Value
[11]
WANG Yingjian,QIU Xuefeng,ZHANG Songtang,GAO Xinbing,LI Jianguo. Calibration and Analysis of the Gaoyakou Short Gravity Calibration Baseline
[12]
ZHENG Donglin,YANG Jinling,LI Song,ZHANG Wenhao. Absolute Gravimeter Measurement Data Processing Based on Hilbert-Transform
[13]
LI Jiangwei，MA Liye，WU Renpan，SUN Wei，WU Duo. Performance Analysis of GPS/BDS Attitude Determination for Low-Cost Single-Frequency u-blox Receivers
[14]
WEI Shouchun,ZHU Yiqing,ZHAO Yunfeng,HUSAN Irxat. Impact on Gravity Data Process of Scale Factor Coefficient of CG-5 Gravimeter
[15]
WEI Shouchun,ZHU Yiqing, LIANG Weifeng,ZHAO Yunfeng,LI Jie,HUSAN Irxat. Impact on Gravity Data Analysis of Network Structure
