国产欧美精品一区二区,中文字幕专区在线亚洲,国产精品美女网站在线观看,艾秋果冻传媒2021精品,在线免费一区二区,久久久久久青草大香综合精品,日韩美aaa特级毛片,欧美成人精品午夜免费影视

In order to evaluate the performance of position estimation in satellite navigation systems, GDOP is widely used as an evaluation method to measure the geometric relationship between measurement error and positioning error. Because the measurement error of each unit of the foundation navigation system is different and the influence of the user distance is not negligible, it is necessary to study the distance-related evaluation standard. Therefore, it is proposed to use WGDOP instead of GDOP as the criterion, and from the analysis of the variance of the foundation navigation system error, the WGDOP expression is analyzed in detail. By comparing the two positioning factors, the WGDOP is used as the foundation navigation system base station to set the evaluation standard and improve the accuracy. The results show that the weighted geometric accuracy factor can be used as the criterion to evaluate the actual use environment of the foundation navigation system, and the accuracy of the system positioning performance is improved.