Power minimization with derivative constraints for high dynamic GPS interference suppression
Power minimization with derivative constraints for high dynamic GPS interference suppression
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DOI：
10.1007/s11432-011-4309-5
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发表时间：
2012-04
期刊：
影响因子：
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通讯作者：
R. Wu;Chan Li;D. Lu
中科院分区：
文献类型：
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作者：
R. Wu;Chan Li;D. Lu
针对高动态GPS（全球定位系统）接收机，提出了一种新的自适应干扰抑制算法。该方法在功率最小化方法中引入了对干扰波达方向的导数约束，拓宽了干扰方向的零陷宽度，适应了干扰方向的快速变化。与传统的基于导数约束的宽零陷算法相比，该方法不需要知道或估计期望信号和干扰的DOA。首先从空域处理的角度讨论了该方法，然后将其推广到空时自适应处理，以抑制宽带扩散多径干扰。仿真实例验证了新方法的有效性。
In this paper, a novel adaptive interference suppression algorithm is proposed for high dynamic GPS (global positioning system) receiver. The new method incorporates derivative constraints on the interference DOA (direction of arrival) into power minimization approach, which could broaden the width of nulls in the interferences directions and adapt to the rapid change of the interference directions. Compared with the traditional wide nulling algorithm based on the derivative constraints, the new method does not have to know or estimate the DOAs of the desired signal and the interference. The new method is firstly discussed in the context of spatial processing, and then extended to space-time adaptive processing to mitigate wideband diffusive multipath interference. Effectiveness of the new method is verified via simulation examples.