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- Title
A Method to Detect Ocean Surface Current Based on X-Band Marine Radar.
- Authors
WANG Li; WU Xiongbin; MA Ketao; SHEN Zhiben
- Abstract
A detection method for ocean surface currents based on the Doppler shift and Bragg scattering for sea clutter imaging using X-band marine radar is addressed in this research. A preprocessing algorithm for current inversion combined with geometric filtering model is presented. Maximun current velocity is not required for band-pass filter processing, since accurate current velocity can be obtained only with liner wave theory dispersion equation and a least-squares algorithm. As compared with the conventional flow detection method using X-band navigation radar, this new algorithm is simple and efficient. It uses resources effectively, and can be applied to both shore-based X-band and shipborne X-band navigation radar. A validation comparison with sea surface current data from a nearby HFGWR shows that this algorithm effectively improves the accuracy and stability of the radar.
- Subjects
OCEAN currents; DOPPLER effect; SCATTERING (Physics); CLUTTER (Radar); OVER-the-horizon radar; BANDPASS filters; GRAVITY waves; ALGORITHMS
- Publication
Geomatics & Information Science of Wuhan University, 2015, Vol 40, Issue 1, p90
- ISSN
1671-8860
- Publication type
Article
- DOI
10.13203/j.whugis20130295