最大似然接收机在8mm连续波雷达中的应用

Application of Maximum Likelihood Receiver to 8 mmCW Radar

详述了在8 mm连续波低空测量雷达中应用高动态、新型的最大似然接收机的基本原理,给出了数学模型并讨论了实现方法,采用模拟和现场试验的方法验证了接收机的性能。结果表明,最大似然接收机技术可以实现对高动态低信噪比目标的稳定跟踪测量,与毫米波技术结合有利于接收机在频域检测目标,将多径干扰滤除,可以实现在海面背景下的低空测量,即使信号电平有20 dB的波动,也可以稳定跟踪测量目标。

The paper presents the principle of application of a new highly dynamic Maximum Likelihood Receiver to 8 mmCW radar, gives the math model and realization method. The receiver performance is verified by simulation and demonstration. The test results show that the maximum likelihood receiver can steadily track highly dynamic targets with low SNR. Combining the receiver with Millimeter-wave technology can help detect targets in frequency domain, remove multi-path interference and track low altitude targets on sea. Even when the variance is 20 dB in receiving level, the receiver can steadily track the target.