论文部分内容阅读
所谓“零基线”检验，就是将两台ＧＰＳ接收机通过“功率分配器“连接到同一副ＧＰＳ接收机天线上，并进行差分定位测量．在这个特殊的检验配置情况下，每一台接收机将接收到来自同一天线的完全相同的ＧＰＳ信号．当进行差分定位解算时，将抑制大气传播影响、轨道误差、多路径效应和天线的缺陷．如此，两台ＧＰＳ接收机之间的任何电性能的差异．便能得到完全的检验．我们给出了４台Ｔｒｉｍｂｌｅ４０００ＳＳＴＧＰＳ接收机“零基线检验”的一些结果，提出了看法．
The so-called “zero baseline” test is to connect two GPS receivers to the same pair of GPS receiver antennas via a “power divider” and perform differential positioning measurements. With this particular inspection configuration, each receiver will receive exactly the same GPS signal from the same antenna. Differential positioning solves the effects of atmospheric propagation, orbital errors, multipath effects, and antenna defects. So, any difference in electrical performance between two GPS receivers. Can get a complete test. We present some of the results of the “zero baseline test” of the four Trimble 4000SSTGPS receivers and put forward our opinion.