单比特宽带数字接收机的频域多波束测向技术

Directions estimation based on frequency domain multiple beams technique for monobit digital wideband receiver

提出了一种用于单比特宽带数字接收机的频域多波束测向新方法,该方法基于优化所得的阵列流形,对射频信号时域直接单比特采样,转换到频域进行检测,然后对过门限的频点分别实现数字多波束形成,利用比幅查表完成空域多目标的联合测频、测向,通过大量的仿真实验分析了该算法对单比特采样数据的多目标处理能力,即在单个、多个独立信号和完全相干信号时所提算法的性能,以及所提算法对幅相误差的稳健性分析。仿真结果和性能分析验证了该算法的有效性和可行性。

A novel multiple target frequency and directions estimation multiple beambforming algorithm is presented for monobit digital wideband receiver. For the given array model, by doing with the monobit digital data obtained from which the radio frequency signal is sampled only one bit, and then target detection is finished in the frequency-domain, and 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 capability, such as independence, correlation, coherent targets is analyzed by the computer simulations, also the robust performance of the proposal algorithm to amplitude and phase errors. Finally the simulation results show that the algorithm proposed is efficient and feasible.