CGCS 2000与PZ-90.02坐标系的对比  

Comparisons and Analysis with CGCS 2000 and PZ-90.02

作　　者：康丽文 李厚朴[1] 边少锋[1] 

机构地区：[1]海军工程大学导航工程系,湖北武汉430033

出　　处：《海洋测绘》2017年第5期43-47,共5页Hydrographic Surveying and Charting

基　　金：国家自然科学基金(41571441;41471387)

摘　　要：根据CGCS 2000和PZ-90.02坐标系的椭球基本常数,推导和比较了CGCS 2000椭球和PZ-90.02椭球的主要几何参数和物理参数,分析了同一点在两个椭球下的大地坐标、正常重力以及正常重力垂直梯度的差异。研究表明,同一点在CGCS 2000椭球与PZ-90.02椭球下的大地坐标差值随着经纬度变化而变化,经度、纬度和高度的最大差值的绝对值分别约为0.147 743 00″、0.011 603 10″和0.772 345m;CGCS 2000椭球与PZ-90.02椭球上的正常重力值和正常重力垂直梯度的差值的绝对值分别约为3.067 18×10^(-6)m/s^2和1.461 73×10^(-3)E。According to the fundamental constants of the ellipsoid adopted by CGCS 2000 and PZ-90.02, the main geometrical and physical parameters of the ellipsoids of CGCS 2000 and PZ-90.02 are derived and compared.The difference of geodetic coordinates, normal gravity and normal gravity - vertical gradient on the same point between these two ellipsoids are analyzed. Studies show that the difference of geodetic coordinates on the same point between CGCS 2000 ellipsoid and PZ-90.02 ellipsoid changes along with latitude and longitude, the absolute value of the maximum difference of longitude, latitude and height between CGCS 2000 and PZ-90. 02 are 0.14774300;,,0.01160310;/ and 0.772345m respectively,and the absolute value of the difference between normal gravity and normal gravity-vertical gradient on CGCS 2000 ellipsoid and that on PZ-90.02 are about 3. 067 18×10^-6m/ s2 and 1.461 73×10^-3E respectively.

关 键 词：大地坐标系 CGCS2000 PZ-90.02 BDS GLONASS 

分 类 号：P226.3[天文地球—大地测量学与测量工程]