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基于垂直双基站的几何交叉定位是同时获取目标深度和距离的有效方法之一。但实际应用中双基站往往存在不位于同一垂线上的偏移情况,从而影响了传统几何交叉算法的定位精度。通过理论分析和数值仿真,详细分析了基站偏移因素对传统几何交叉定位精度的影响,进而给出了一种考虑到基站有偏情形的垂直双站几何交叉定位算法。
Geometrical cross-location based on vertical bistatic stations is one of the effective methods to obtain the target depth and distance simultaneously. However, in practical applications, bi-base stations often have offset that is not located on the same vertical line, thus affecting the positioning accuracy of the traditional geometric cross-over algorithm. Through the theoretical analysis and numerical simulation, the influence of base station offset on the accuracy of traditional geometric cross-location is analyzed in detail, and then a vertical cross-station geometric cross-location algorithm considering the biased situation of base station is given.