Title :
Low speed target detection with short CIT in HF surface wave radar
Author :
Shang, Shang ; Ning, Zhang
Author_Institution :
Sch. of Electron. & Inf. Eng., Harbin Inst. of Technol., Harbin, China
Abstract :
High frequency surface wave radar can detect targets beyond the horizon. It needs long coherent integration time (CIT) to detect low speed targets, such as ships, in the environment with sea clutter. In order to improve the efficiency of the radar system, and avoid the Doppler broadening caused by long CIT, it is necessary to shorten coherent integration time. Modern spectrum estimation technique is adopted to extract Doppler information from HF radar echo signals. It can provide high resolution to realize ship detection in short CIT. The real data processing and analysis show that the autoregressive spectrum estimation technology is effective to detect low speed target in short CIT in high frequency surface wave radar.
Keywords :
echo; object detection; radar detection; Doppler broadening; Doppler information extraction; HF radar echo signals; HF surface wave radar; autoregressive spectrum estimation technology; coherent integration time; high frequency surface wave radar; low speed target detection; low speed targets; radar system; real data analysis; real data processing; sea clutter; ship detection; short CIT; spectrum estimation technique; Clutter; Doppler effect; Radar detection; Signal resolution; Spectral analysis; Surface waves; AR; Doppler resolution; coherent integration time; high frequency surface wave radar;
Conference_Titel :
Signal Processing Systems (ICSPS), 2010 2nd International Conference on
Conference_Location :
Dalian
Print_ISBN :
978-1-4244-6892-8
Electronic_ISBN :
978-1-4244-6893-5
DOI :
10.1109/ICSPS.2010.5555709