补偿矩阵测频算法在单比特多波束测向中的应用

Application of Compensation Matrix Frequency Measurement in Direction Finding based on Mono-bit Receiver

将补偿矩阵与DFT测频算法相结合,并将该测频方法应用于频域多波束测向,解决了单比特接收机处理双信号瞬时动态范围小的问题。单比特接收机同时处理两个信号时,在检测到第一个信号后,采用补偿矩阵对MONODFT结果进行修正,提高第二个信号的检测概率,并对所测得的信号频点分别实现基于阵列流形的频域数字多波束形成进行测向。通过仿真分析验证了补偿矩阵对提高单比特接收机瞬时动态范围的有效性。

This paper combines the compensation matrix with the DFT frequency measurement algorithm, and applied the frequency measurement method to frequency domain multi -beam direction finding to solve the problem that the dynamic range of single bit receiver is too small. When Mono - bit receiver processing two signals in the same time, the MONODI^F result is corrected using the compensation matrix after the first signal having been detected, to improving the detection probability of the second signal. Multiple beams of the detected frequency are forming at the same time, then the directions of the multiple targets can be obtained by the amplitude comparison. The performance of multiple signal detection capa- bility is analyzed by the computer simulations. Finally the simulation results show that the algorithm pro- posed is efficient and feasible.