研究当动态干扰或同信道干扰存在时,如何提高抗干扰GPS接收机的稳健性问题.在干扰来向上,通过增加微分约束条件,可以将零陷展宽,从而提高其稳健性.主要研究3种稳健自适应抗干扰算法:稳健的功率倒置(PI)算法、加载的稳健功率倒置算法和稳健特征向量投影(EP)算法.3种算法均不需要预知GPS信号和干扰信号的来向等先验信息.仿真结果表明,以上3种稳健算法适用于当干扰源是运动的或同信道干扰源的情形.
The problem of providing robustness to the conventional narrow-band uniform linear array configuration so as to handle moving and cochannel jammers in GPS receiver is addressed here. This robustness is obtained via the use of derivative constraints in jammer directions. We develop the robust power inversion (PI) algorithm, the loading robust PI algorithm, and the robust eigenvector projection (EP) algorithm. These three algorithms are characterized by the fact that there is no need to know the directions of the GPS signals and jammers. Simulation results show that the algorithms proposed here are suitable for dealing with moving or cochannel jammers.
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