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摘要:
速度多假目标欺骗干扰下，当雷达对机动目标进行跟踪时，会遇到虚假航迹较多、真假目标鉴别难度较大、真实目标跟踪不稳定等难题。针对这些问题，提出了速度多假目标欺骗干扰下基于速度估计径向投影和运动状态计数延迟的目标跟踪算法。首先，采用速度量测和位置量测相结合的双通道机动检测方法，保证速度欺骗干扰下模型切换的准确性和及时性；然后，利用运动状态计数延迟的方法确定目标模型切换后跟踪稳定的时刻；最后，利用基于位置信息的速度估计径向投影构造检验统计量对速度欺骗干扰进行识别。仿真实验表明，该算法有较好的稳健性。
Abstract:When radar is used to track the maneuvering target under speed deception interference, there are many problems such as many false trajectories, hard discrimination of true-false target, and real target tracking instability. In view of these problems, this paper puts forward the speed interference identification method based on velocity estimation radial projection and motion state count delay under multiple false target deception interference. Firstly, the dual-channel maneuver detection method combining velocity measurement and position measurement was used to ensure the accuracy and timeliness of model switching under speed deception interference. Then, the method of motion state count delay was used to determine the time of tracking stability after target model switching; Finally, the test statistics using velocity estimation radial projection based on position information was used to identify the speed deception. The simulation results show that the algorithm has good robustness.
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图 1 速度多假目标欺骗干扰示意图
Figure 1. Schematic of speed-multiple-false-target deception interference
图 3 雷达测距精度对目标位置跟踪误差的影响
Figure 3. Influence of radar ranging accuracy on target position tracking error
图 4 雷达测距精度对目标速度估计误差的影响
Figure 4. Influence of radar ranging accuracy on target velocity estimation error
图 5 雷达测距精度对速度欺骗干扰正确剔除率的影响
Figure 5. Influence of radar ranging accuracy on correct elimination rate of velocity deception interference
图 6 雷达测距精度对真实速度信息误剔除率的影响
Figure 6. Influence of radar ranging accuracy on wrong elimination rate of true velocity information
图 7 方位角测量精度对目标位置跟踪误差的影响
Figure 7. Influence of azimuth measurement accuracy on target position tracking error
图 8 方位角测量精度对目标速度估计误差的影响
Figure 8. Influence of azimuth measurement accuracy on target velocity estimation error
图 9 方位角测量精度对速度欺骗干扰正确剔除率的影响
Figure 9. Influence of azimuth measurement accuracy on correct elimination rate of velocity deception interference
图 10 方位角测量精度对真实速度信息误剔除率的影响
Figure 10. Influence of azimuth measurement accuracy on wrong elimination rate of true velocity information
图 11 俯仰角测量精度对目标位置跟踪误差影响
Figure 11. Influence of elevation angle measurement accuracy on target position tracking error
图 12 俯仰角测量精度对目标速度估计误差的影响
Figure 12. Influence of elevation angle measurement accuracy on target velocity estimation error
图 13 俯仰角测量精度对速度欺骗干扰正确剔除率的影响
Figure 13. Influence of elevation angle measurement accuracy on correct elimination rate of velocity deception interference
图 14 俯仰角测量精度对真实速度信息误剔除率的影响
Figure 14. Influence of elevation angle measurement accuracy on wrong elimination rate of true velocity information
图 15 雷达测速精度对目标位置跟踪误差的影响
Figure 15. Influence of radar velocity measurement accuracy on position tracking error
图 16 雷达测速精度对目标速度估计误差的影响
Figure 16. Influence of radar velocity measurement accuracy on target velocity estimation error
图 17 雷达测速精度对速度欺骗干扰正确剔除率的影响
Figure 17. Influence of radar velocity measurement accuracy on correct elimination rate of velocity deception interference
图 18 雷达测速精度对真实速度信息误剔除率的影响
Figure 18. Influence of radar velocity measurement accuracy on wrong elimination rate of true velocity information
表 1 机动较弱目标的运动参数
Table 1. Motion parameters of low maneuvering target
运动阶段序号 持续时间段/s X方向加速度/
(m·s-2)Y方向加速度/
(m·s-2)Z方向加速度/
(m·s-2)1 0～65 0 0 0 2 66～88 -20 20 10 3 89～117 20 -10 10 4 118～136 -20 10 10 5 137～160 30 -20 -10 6 161～246 0 0 0 
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