基于高斯坐标的GPS伪距单点定位研究

Research on GPS Pseudo Range Single Point Positioning Based on Gaussian Coordinate

GPS伪距单点定位速度快,不存在整周模糊度,因此具有很高的实用价值。GPS伪距单点定位结果可表示为几种不同的坐标形式。由于生产实际中高斯坐标应用的广泛性,因此,介绍了以高斯平面坐标参数形式进行平差的方法,从而直接得出高斯平面坐标形式的伪距单点定位结果。给出了相应数学模型,编写对应定位程序,并利用IGS提供的广播星历和2012年12月某站的数据为样例进行了实验。最后,对结果做精度分析,并与基于WGS-84参数的定位结果经传统坐标转换程序转换后进行比较,结果证实了该方法的可靠性。

With fast and has no integer ambiguity,GPS pseudo range single point positioning has very high practical value,and the results of it can be expressed as different coordinate form.Due to the wide application of Gaussian coordinate in actual production,the method of adjustment to the Gauss plane coordinate parameter is introduced,which directly obtained Gauss plane coordinate form of pseudo range point positioning results.The corresponding mathematical model is provided,and the corresponding positioning program is compiled,and uses the broadcast ephemeris provided by IGS and the data of some station in December 2012 as the example to carry out the experiment.Finally,the accuracy of the results is analyzed and compared with the traditional coordinate transformation program based on the WGS-84 parameters.The results are satisfactory,which proves the reliability of the method.