## 纯方位目标定位算法的研究

Title  Study on Algorithms for Bearing-only Target Localization
Abstract
Bearing-only target localization ，which is widely concerned and researched, has a wide range of civilian and military applications in aviation, aerospace and navigation. In this paper, we give a brief introduction of the research background and significance of the bearing-only location technique, and the current research situation at home and abroad in this area. Then we introduce several common bearing-only location algorithms and analyze its advantages and disadvantages. For its common shortcoming, we introduce a novel location-penalized maximum likelihood estimator. Afterwards we illustrate its theory and compare the performances of the traditional bearing maximum likelihood and location-penalized maximum likelihood estimators by performing several simulations. At last, we verify that the novel location-penalized maximum likelihood estimator is superior than the traditional one. 源自!六%维^论*文`网www.lwfree.cn
Keywords  Bearing-only Target Localization  Location Estimation Algorithm  Location-Penalized Maximum Likelihood Estimator

1  绪论 1
1.1  纯方位目标定位算法的研究背景及研究意义 2
1.2  国内外研究现状 3
2  几种常见的纯方位定位算法 8
2.1  极大似然估计算法 8
2.2  最小二乘法  8
2.3  卡尔曼滤波方法  9
3  一种新型的位置惩罚极大似然估计算法 10
3.1  新型位置惩罚极大似然算法的提出 10
3.2  新型极大似然函数表达式的推导 10
3.3  使用高斯-牛顿方法解决目标位置函数最小化问题 12
4  仿真与比较 14
4.1  最小均方差下界CRLB比较 14
4.1.1  与目标间距离固定观测角度变化的情况下的CRLB比较 16
4.1.2  与目标间观测角度固定距离变化的情况下的CRLB比较 17
4.2  两种不同情况下的仿真与比较 18
4.2.1  TBML估计与LPML估计的MSE下界的仿真比较 18
4.2.2  TBML估计与LPML估计的RMS位置误差的仿真比较 20

1  绪论

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