Null Phase-Shift Instantaneous Polarization Filter

MAO Xing-peng; LIU Yong-tan; DENG Wei-bo; YU Chang-jun; MA Zi-long

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Null Phase-Shift Instantaneous Polarization Filter

更新时间：2025-07-16

- Null Phase-Shift Instantaneous Polarization Filter
- Acta Electronica Sinica Vol. 32, Issue 9, Pages: 1495-1498(2004)
- 作者机构：
  
  哈尔滨工业大学电子与通信工程系,黑龙江,哈尔滨,150001
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN957.52
- Published Online：25 September 2004，
  
  Published：2004
- 稿件说明：
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MAO Xing-peng, LIU Yong-tan, DENG Wei-bo, et al. Null Phase-Shift Instantaneous Polarization Filter[J]. Acta Electronica Sinica, 2004, 32(9): 1495-1498.
DOI：

MAO Xing-peng, LIU Yong-tan, DENG Wei-bo, et al. Null Phase-Shift Instantaneous Polarization Filter[J]. Acta Electronica Sinica, 2004, 32(9): 1495-1498. DOI：

摘要

常规极化滤波方法会造成目标信号相位的改变

滤波器参数的变化影响相移的大小

进而导致相位失真.为避免相位失真

本文在普通单凹口、多凹口逻辑积极化滤波器的基础上提出零相移瞬时极化滤波器

通过线性极化变换、普通极化滤波和相位(和幅度)的补偿实现目标相位(幅度)的保持.实际数据的处理结果表明

在抑制高频雷达电台干扰的实验中

信干比改善可以达到27dB以上.

Abstract

Normal methods of polarization filter change the phases of the target signal

and the difference of phase-shift

which is affected by the difference of the filter parameters produces the phase distortion.Based on the normal single notch and multi-notch logical product polarization filter

a new type of polarization filter named Null Phase-Shift Instantaneous Polarization (NPSIP) filter is proposed to avoid the phase distortion.The real phase (and amplitude) is kept through Linear Polarization Translation (LPT)

normal polarization filter and the compensation of the phase (and the amplitude).It is indicated from the experimentally derived data that the improvement of the signal to interference ratio (SIR) achieved more than 27dB in the experiment of HF radar for suppressing the radio interference.

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