基于等距测量对匀速直线目标航向的纯方位估计

Bearing-only Estimation for Target Heading Under Uniform Linear Motion Conditions Based on Equispaced Measurement

在二维平面上,对于匀速直线运动目标,如假定静止单站能够在目标移动路径上等间距的连续三次获取目标的方位信息,则即能由目标的移动轨迹线方程和测站与目标间的方位线方程,导出目标航向角的解析表示式。模拟计算验证了公式的正确性,而误差分析则再次证实,仅基于纯方位测量所获得的解的精度是较低的。

In two-dimensional plane, for uniform motion target, provided that single fixed station can obtain target bearing by equally spaced and continuously three times measurement in target mobile path, the analytic expression of target heading can be derived by using the straight-line equation of target mobile trajectory and the linear equation of bearing between station and target. The analog calculation validates the correctness of derived formula. And that error analysis again validates that the measurement accuracy obtained by bearing-only is lower.