Dear Colleagues,

Over 65 years ago, Crombie observed the backscatter from HF radar transmitting at 13.5 MHz from the ocean surface and observed two dominant peaks in the Doppler spectrum, which were caused by Bragg scattering. Since that time, radar has often been used ocean monitoring, with new methodologies being introduced to extract ocean wave spectra and tide and wind information from backscattered radar data. In addition to HF radar, marine radar often operating at X-band frequencies have been used to monitor oceanographic parameters at higher resolutions, but usually over shorter ranges. Both radar modalities may also be used to monitor the presence of targets, such as ships or ice, in the ocean, as well as exact parameters of these targets, such as size, speed, and location.

This Special Issue aims to present new and cutting-edge research in the monitoring of targets such as ships and ice and their oceanographic parameters using various radar configurations, including sky-based radar and hardware. It also aims to collate new signal processing algorithms and methodologies to improve the accuracy of ocean surface and target parameter extraction data acquired using such radar systems.

Dr. Reza Shahidi
Prof. Dr. Eric Gill
Guest Editors

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• HF radar
• X-band radar
• ocean wave parameters
• doppler spectrum
• target parameters
• wave spectrum inversion
• ocean surface currents
• ocean surface winds