GPS接收机内噪声水平的评价与检测方法

The evaluation and test on interior noise level of GPS receiver

论文结合某品牌GPS接收机检测实例,提出了GPS接收机内噪声水平分布统计的评价方法,以及在超短基线场内GPS接收机内噪声水平的全新检测方法———多时段旋转检测台法。实例测试,按本方法得到的被测试GPS接收机内噪声水平标准差为0.38mm。由测试实例得到如下结论:本文的GPS接收机内噪声水平评价方法以及检测方法更加合理、可信;在超短基线场内多时段测得的同一基线长度互差应小于2mm;GPS接收机系统软件的抗噪性能对内噪声水平有着非常重要的影响。

Combined with the test of one kind of GPS receiver,this paper puts forward a method of evaluation on interior noise level using Chorology and Statistics and a new testing method by revolving the horizontal table-board between multi-sessions on the field of Mini-baseline.According to the method of this paper,the standard deviation of interior noise level of the tested GPS receivers is 0.38mm.Through the case,we can draw the following conclusions: First,the method of appraisal and testing of this paper is more rational and credible.Second,the difference of same baseline between two sessions should less than 2mm.Last,the system software installed in GPS receiver has a very important influence on interior noise level of GPS receiver.