HFSW Radar Model: Simulation and Measurement

High-frequency surface-wave (HFSW) radars are usually used to remotely measure oceanographic parameters. These systems can also potentially detect targets beyond the conventional microwave radar coverage. In this paper, the backscattered Doppler spectrum made up of the sea clutter, ship echoes, and the background noise has been modeled. Taking into account the propagation and the signal-processing effects, a range-Doppler image has been generated. This model can be used for different purposes like the (theoretical) evaluation of detection performance. This paper gives an overview of the theoretical elements for modeling the backscatter signal. The processing effects on the range-Doppler image and the time-evolving target signature are also introduced. Some of the simulated elements and the obtained range-Doppler images are compared with real data. Finally, from this model, the detection capabilities of HFSW radars are evaluated.

[1]  H. Plendl.  Concerning the Influence of the Eleven-Year Solar Activity Period upon the Propagation of Waves in Wireless Telegraphy , 1932, Proceedings of the Institute of Radio Engineers.

[2]  W. Pierson,et al.  A proposed spectral form for fully developed wind seas based on the similarity theory of S , 1964 .

[3]  D. Barrick.  Remote sensing of sea state by radar , 1972 .

[4]  S. Rotheram.  Ground-wave propagation. Part 1: Theory for short distances , 1981 .

[5]  S. Rotheram.  Ground-wave propagation. Part 2: Theory for medium and long distances and reference propagation curves , 1981 .

[6]  D. Barrick,et al.  Analysis methods for narrow-beam high-frequency radar sea echo , 1982 .

[7]  Hermann Rohling,et al.  Radar CFAR Thresholding in Clutter and Multiple Target Situations , 1983, IEEE Transactions on Aerospace and Electronic Systems.

[8]  David K. Barton,et al.  Modern Radar System Analysis , 1988 .

[9]  M. Tucker.  Waves in ocean engineering : measurement, analysis, interpretation , 1991 .

[10]  Celso V. Davila.  Comparison of HF Groundwave Propagation Models , 1993 .

[11]  G. Barton,et al.  The RADSIM high fidelity radar and EW simulation , 1993 .

[12]  Y. Ichioka,et al.  Statistical formulation for an inhomogeneous random water surface: a basis for optical remote sensing of oceans , 1994 .

[13]  K. Katsaros,et al.  A Unified Directional Spectrum for Long and Short Wind-Driven Waves , 1997 .

[14]  M.D.E. Turley.  Hybrid CFAR techniques for HF radar , 1997 .

[15]  L. Sevgi.  Stochastic modelling of target detection and tracking in surface wave HF radars , 1998 .

[16]  J. Wait.  The ancient and modern history of EM ground-wave propagation , 1998 .

[17]  K. Gurgel,et al.  Wellen Radar (WERA): a new ground-wave HF radar for ocean remote sensing , 1999 .

[18]  E. Gill.  The scattering of high frequency electromagnetic radiation from the ocean surface : an analysis based on a bistatic ground wave radar configuration , 1999 .

[19]  K. Gurgel,et al.  High-frequency radars : physical limitations and recent developments , 1999 .

[20]  E. Gill,et al.  An analysis of the scattering of high‐frequency electromagnetic radiation from rough surfaces with application to pulse radar operating in backscatter mode , 2000 .

[21]  T. M. Blake.  The detection and tracking of small fast boats using HF surface wave radar , 2000 .

[22]  K. Gurgel,et al.  HF radars: Physical limitations and recent developments , 2000 .

[23]  H. C. Chan,et al.  An integrated maritime surveillance system based on high-frequency surface-wave radars. 1. Theoretical background and numerical simulations , 2001 .

[24]  M J Tucker,et al.  WAVES IN OCEAN ENGINEERING , 2001 .

[25]  L. Sevgi.  Target reflectivity and RCS interactions in integrated maritime surveillance systems based on surface-wave high-frequency radars , 2001 .

[26]  H. C. Chan,et al.  An integrated maritime surveillance system based on high-frequency surface-wave radars. 2. Operational status and system performance , 2001 .

[27]  J. Zhang,et al.  An alternate analysis for the second-order high frequency bistatic radar cross section of the ocean surface - patch scatter and its inversion , 2003, Oceans 2003. Celebrating the Past ... Teaming Toward the Future (IEEE Cat. No.03CH37492).

[28]  A. Ponsford,et al.  HF surface wave radar operation in adverse conditions , 2003, 2003 Proceedings of the International Conference on Radar (IEEE Cat. No.03EX695).

[29]  M. Lesturgie.  Contribution de la technologie radar HF a ondes de surface a la surveillance maritime depuis le littoral , 2004 .

[30]  K. Gurgel,et al.  HF radar wave measurements in the presence of ship echoes - problems and solutions , 2005, Europe Oceans 2005.

[31]  A.L. Dzvonkovskaya,et al.  CFAR Target Detection Based on Gumbel Distribution for HF Radar , 2006, 2006 International Radar Symposium.

[32]  Weimin Huang,et al.  On the Development of a Second-Order Bistatic Radar Cross Section of the Ocean Surface: A High-Frequency Result for a Finite Scattering Patch , 2006, IEEE Journal of Oceanic Engineering.

[33]  T. Schlick,et al.  An Empirical Method to Derive Ocean Waves From Second-Order Bragg Scattering: Prospects and Limitations , 2006, IEEE Journal of Oceanic Engineering.

[34]  Target Detection with Adaptive Power Regression Thresholding for HF Radar , 2006, 2006 CIE International Conference on Radar.

[35]  A. Dzvonkovskaya,et al.  Adaptive Thresholding for HF Radar Ship Detection , 2006 .

[36]  D. Trizna,et al.  Target Classification and Remote Sensing of Ocean Current Shear Using a Dual-Use Multifrequency HF Radar , 2006, IEEE Journal of Oceanic Engineering.

[37]  L. Sevgi,et al.  Groundwave Modeling and Simulation Strategies and Path Loss Prediction Virtual Tools , 2007, IEEE Transactions on Antennas and Propagation.

[38]  Eric W. Gill,et al.  A combined sea clutter and noise model appropriate to the operation of high‐frequency pulsed Doppler radar in regions constrained by external noise , 2008 .