Abstract
High-frequency surface wave radar (HFSWR) can detect and continuously track ship targets in real time and beyond the horizon. Compared with transmit/receive (T/R) monostatic HFSWR, the T-R bistatic HFSWR has the advantages of flexibility, receiver concealment, and large coverage because of the separation between the radar transmitter and receiver locations. So far, there is little research on marine ship monitoring for bistatic HFSWR. This article examines ship monitoring performance with T-R bistatic compact HFSWR of small aperture based on measured experimental data. The first-order sea-clutter characteristics and detection blind zone for T-R bistatic HFSWR were investigated theoretically, and the formulas for the moving ships were derived and its position accuracy were analyzed from simulation results. The experimental results of ship target detection of bistatic compact HFSWR carried out in 2015 were presented, and the spectrum characteristics of the bistatic HFSWR were analyzed with measured experimental data. A method integrating detection and tracking was applied to the target detection data collected by the bistatic compact radar, and two targets examples tracked were given. Finally, the validity of the method and the tracing results were verified by using synchronous automatic identification system data, and the ship positioning accuracy of the bistatic compact HFSWR was statistically analyzed. The analysis shows that bistatic radars have larger errors than monostatic T/R radars, with a positioning error as large as 10 km.
Highlights
H IGH-FREQUENCY surface wave radar (HFSWR), known as HF surface over-the-horizon radar, operates in the 3–30 MHz band, with wavelengths between 100 and 10 m, Manuscript received April 22, 2021; revised July 31, 2021 and December 21, 2021; accepted January 2, 2022
Bistatic T-R radar can be combined with monostatic T/R radar to form the T/R-R radar system; unlike the single monostatic or bistatic radar systems, the T/R-R system can obtain multidirectional observation information and improve ship target detection performances and precision [6], [9], [10], especially for the compact HFSWR system
Based on (1) and (4), it can be seen that the target detection blind zone caused by the first-order sea clutter for the T-R bistatic HFSWR is wider than that of the monostatic T/R radar, and is affected by factors such as the bistatic angle and ocean currents velocity
Summary
H IGH-FREQUENCY surface wave radar (HFSWR), known as HF surface over-the-horizon radar, operates in the 3–30 MHz band, with wavelengths between 100 and 10 m, Manuscript received April 22, 2021; revised July 31, 2021 and December 21, 2021; accepted January 2, 2022. Moving targets originally buried in the sea clutter for T/R HFSWR can be separated from the sea clutter in the T-R bistatic HFSWR data For this reason, bistatic T-R radar can be combined with monostatic T/R radar to form the T/R-R radar system; unlike the single monostatic or bistatic radar systems, the T/R-R system can obtain multidirectional observation information and improve ship target detection performances and precision [6], [9], [10], especially for the compact HFSWR system. Other articles based on measured HFSWR data mainly focused on analysis of the sea-clutter characteristic [13] and sea state monitoring, for example, Yang et al [14] used a bistatic HFSWR to measure ocean currents. SHIP TARGET PARAMETER ESTIMATION AND POSITION ERROR SIMULATION FOR BISTATIC HFSWR
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
