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本文结合某地面干扰系统的工程实际,对三维空间中带有辐射源目标的被动定位进行了讨论。一种利用定位面并取最大似然估计点作为定位点的算法,将用作估算目标位置的初估值;而利用粗估值,方位角与俯仰角的迭代加权最小二乘估计将作为定位的精确估值。确立了一个描述定位精度的参数EEP,在此基础上分析了站址的布局与定位精度的关系。对各种条件下进行模拟的结果表明:定位精度不仅与各测量站本身的测量精度有关,而且还与各测量站间的相对位置及目标相对测量系统的距离,方位,高度等有关。
In this paper, the passive positioning of a target with a radiation source in three-dimensional space is discussed based on the engineering practice of a ground-based jamming system. An algorithm that uses the locating plane and takes the maximum likelihood estimation point as the anchor point will be used as an initial estimate of the target position. An iterative weighted least-squares estimate using the rough estimate, azimuth and elevation angles will be used as the anchor The exact valuation. Established a description of positioning accuracy parameters EEP, on the basis of analysis of the site layout and positioning accuracy. The results of simulations under various conditions show that the positioning accuracy is not only related to the measurement accuracy of each measurement station, but also to the relative position of each measurement station and the distance, azimuth and altitude of the target relative measurement system.