Suppressing coherent noise in radar applications with long dwell times

Author

Allen, Christopher T. ; Mozaffar, Shadab N. ; Akins, Torry L.

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Univ. of Kansas, Lawrence, KS, USA

Volume

2

Issue

3

fYear

2005

fDate

7/1/2005 12:00:00 AM

Firstpage

284

Lastpage

286

Abstract

A method for suppressing internally produced coherent noise in radar applications is presented and experimentally demonstrated. The technique enhances conventional coherent averaging and involves interpulse phase modulation that is introduced digitally in the transmit waveform and removed digitally following digitization in the receiver. Experimental demonstration of this concept resulted in an additional noise floor reduction of 15 to 20 dB (compared to the conventional coherent averaging alone) when the number of coherent averages was between 1000 to 100 000, beyond which no significant suppression was observed.

Keywords

noise; radar applications; radar signal processing; synthetic aperture radar; 350 MHz; 40 MHz; internally produced coherent noise; interpulse phase modulation; long dwell times; noise floor reduction; noise suppression method; radar applications; radar signal processing; technique; transmit waveform; Frequency; Noise level; Noise reduction; Phase modulation; Quantization; Radar applications; Radar remote sensing; Signal detection; Signal to noise ratio; Stacking; Radar signal processing;

fLanguage

English

Journal_Title

Geoscience and Remote Sensing Letters, IEEE

Publisher

ieee

ISSN

1545-598X

Type

jour

DOI

10.1109/LGRS.2005.847931

Filename

1468082