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首页> 外文期刊>IEEE Transactions on Aerospace and Electronic Systems >Passive localization of frequency-agile radars from angle andfrequency measurements
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Passive localization of frequency-agile radars from angle andfrequency measurements

机译：角度和频率测量对频率捷变雷达的无源定位

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It is well known that the position of a stationary radar can be estimated by a single moving observer from angle and/or frequency measurements taken passively at different points in its trajectory. Depending on the measurement set different localization methods result: the bearing method (BM), the frequency method (FM), and the combined method (CM). Previous studies analyze the three methods on the basis of constant emitter frequencies. However, radars with constant emitter frequencies are not realistic. Frequency drift and frequency hopping have to be taken into account. Therefore, to include radars the emitter model has been extended by drift and frequency hopping in this study, and the estimation methods have been reanalyzed. The effects of the model extensions become transparent in a parametric Cramer-Rao (CR) analysis. The results obtained in this way are confirmed by Monte Carlo simulations taking maximum likelihood (ML) as estimation procedure
机译：众所周知，固定雷达的位置可以由一个移动的观察者根据在其轨迹的不同点处被动地进行的角度和/或频率测量来估计。根据测量集的不同，可以得到不同的定位方法：轴承方法（BM），频率方法（FM）和组合方法（CM）。先前的研究基于恒定的发射器频率来分析这三种方法。然而，具有恒定发射器频率的雷达是不现实的。必须考虑频率漂移和跳频。因此，为包括雷达在内，本研究通过漂移和跳频扩展了发射器模型，并对估计方法进行了重新分析。在参数Cramer-Rao（CR）分析中，模型扩展的效果变得透明。以蒙特卡洛模拟法以最大似然（ML）作为估计程序来确认以此方式获得的结果

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