Title :
Experimental analysis of sea clutter in shipborne HFSWR
Author :
Xie, J. ; Yuan, Y. ; Liu, Y.
Author_Institution :
Dept. of Electron. & Commun. Eng., Harbin Inst. of Technol., China
fDate :
4/1/2001 12:00:00 AM
Abstract :
The spreading of the dominant first order Bragg lines in shipborne HFSWR (high-frequency surface wave radar) severely obscures targets with Doppler frequencies within the spreading domain. STAP (space-time adaptive processing) is one of the effective methods for solving the problem. The experimental one-dimensional spreading spectrum and two dimensional space-time spectrum of sea clutter in shipborne HFSWR are given. The eigenvalue distribution of the space-time covariance matrix is also obtained. All experimental results show good agreement with the spreading model of sea clutter and theoretical analysis of the eigenspectrum for a random process, which is of advantage for sea clutter suppression and target detection in shipborne HFSWR with STAP
Keywords :
Doppler effect; covariance matrices; eigenvalues and eigenfunctions; interference suppression; marine radar; radar clutter; radar detection; radar signal processing; random processes; space-time adaptive processing; spectral analysis; 1D spreading spectrum; 2D space-time spectrum; Doppler frequencies; STAP; eigenspectrum; eigenvalue distribution; experimental analysis; first order Bragg lines spreading; high-frequency surface wave radar; marine radar; random process; sea clutter suppression; shipborne HFSWR; space-time adaptive processing; space-time covariance matrix; spreading domain; spreading model; target detection;
Journal_Title :
Radar, Sonar and Navigation, IEE Proceedings -
DOI :
10.1049/ip-rsn:20010135
