Ocean Remote Sensing Based on Radar, Sonar and Optical Techniques

Dear Colleagues,

The ocean covers approximately 71% of the earth’s surface, and it plays an important role in the human world. Therefore, the understanding, monitoring, and protecting of the ocean are areas of constant concern. Radar is one of the most commonly used devices for ocean remote sensing above the sea surface, and it can be used for the pre-surveying of marine oil, marine offshore terrain inversion, the monitoring of marine environment such as the detection of oil spills, and so on. Sonar is widely exploited below the sea surface. Based on the sonar technique, underwater terrain mapping, underwater rescue, underwater archaeology, the detecting of underwater unexploded explosives, and so on can be easily carried out. Underwater optical imaging can also be used for marine detection, underwater robotics, underwater archaeology, and other fields. Based on radar, sonar, and optical technologies, we can well understand, monitor, and protect the ocean.

Electromagnetic, acoustic and optical sensors can be installed at fixed locations in harbors, either on the surface, underwater, or on mobile platforms such as unmanned, aerial, underwater, or surface vehicles, as well as manned surface ships. Multiple sensors are often networked to effectively explore, observe, and exploit the ocean. The transmission characteristics of the electromagnetic, acoustic, and optical signal will be affected by many factors, such as propagation loss, multipath, Doppler, a time-varying channel, radio interference, attenuation, scattering, and so on. In addition, the sensor network also has problems such as sparsity, the limited energy of the sensor nodes, unstable topology and transmission, which seriously reduces the performance of remote sensing, navigation, positioning, environmental perception, array processing, and signal detection based on the sensor network. Consequently, the image quality, color distortion, low contrast, etc., would be severely degraded. Therefore, it is critical for electromagnetic, acoustic, and optical sensor and network technology to realize the effective acquisition of ocean information through advanced signal processing technology.

In this Special Issue, researchers are invited to report their latest progress in the fields of radar, sonar, and optics. This includes radar, sonar and optical communication, navigation, positioning, environmental perception, array processing and signal detection, remote sensing, acoustic tomography, ocean sound field monitoring, underwater optical imaging, etc.

Aim of the Special Issue and how the subject relates to the journal scope:

• Radar imaging;
• Sonar imaging;
• Optical imaging;
• Image denoising;
• Image enhancement;
• Radar and sonar array signal processing;
• Underwater communication and networks;
• Target detection and recognition;
• Obstacle detection and collision avoidance;
• Underwater localization and bathymetry mapping.

Dr. Xuebo Zhang
Prof. Dr. Haiyong Xu
Dr. Jingyue Lu
Prof. Dr. Lei Zhang
Dr. Marc Pinto
Dr. Farman Ali
Guest Editors

Manuscript Submission Information

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• ocean
• remote sensing
• image
• radar
• sona
• optical technology