Title :
An improved time-frequency distribution method for ionosphere phase decontamination
Author :
Xue Li ; Zhuan Xia Lu ; Wen Ling Guo
Author_Institution :
China Res. Inst. of Radiowave Propagation, Qingdao, China
Abstract :
Ionosphere phase contamination causes spectrum broadening of the OTHR ground Clutter and Sea Clutter, restricting the detection of slowly moving target on the sea seriously. In this article, a new method with high time-frequency cohesive and low cross item is put forward. The method is used to solve the problem of ionosphere phase contamination by Time-Frequency Distribution and it succeeded in solving the low time-frequency cohesive of STFT method and the high cross item of WVD method, improving the phase pollution suppression precision dramatically.
Keywords :
Fourier transforms; contamination; decontamination; ionospheric electromagnetic wave propagation; object detection; radar clutter; radar detection; time-frequency analysis; OTHR ground clutter; STFT method; WVD method; improved time-frequency distribution method; ionosphere phase contamination; ionosphere phase decontamination; low cross item; low time-frequency cohesive; over-the-horizon radar; phase pollution suppression; sea clutter; short-time Fourier transforms; slowly moving target detection; Clutter; Coherence; Contamination; Doppler effect; Ionosphere; Spectral analysis; Time frequency analysis;
Conference_Titel :
Antennas, Propagation & EM Theory (ISAPE), 2012 10th International Symposium on
Conference_Location :
Xian
Print_ISBN :
978-1-4673-1799-3
DOI :
10.1109/ISAPE.2012.6408835
