对相似递推程差的一种修正方法

利用相似递推法,即可将基于短基线的相差测量结果拓展到长基线多站无源定位系统,由于双站相差测距法实际上是建立在三站定位技术之上的,且测量精度与量值巨大的光速无关,所以就能实现比现有双站测向和三站时差法更高的定位精度。但为实现准确定位,必须对递推程差进行修正。本文在已有分析的基础上,利用双站间的交会角,给出了一种更适用于工程设计的递推程差修正方法。

Modified Method for Path Difference Recurred by Geometric Similarity

Using similarity recurrence method, the measuring phase difference result based on short baseline can be widened to multi-stations passive location system with long baseline. Because the phase difference ranging of two stations is based on the three stations location technology and its measurement accuracy is not associated with velocity of light whose magnitude is enormous, the higher positioning accuracy can be realized as compared with the DF of two stations and the time difference of three stations in existence. But, the path difference obtained by recurred must be corrected in order to realize veracious location. On the basis of existing analysis, this paper presents a correct method which is more applicable for engineering design by making use of the cut Angle between two stations.