Image Radar-based Traffic Surveillance System: An all-weather sensor as intelligent transportation infrastructure component

Sensing, processing, and communication are the 3 key elements for Intelligent Transportation Systems (ITS), while processing is ever advancing on cloud and communication that seems to be solved already by the implementation of 5G communication protocol, sensing has become the most critical part. Traditional video dominated sensing system needs revolutions because of many physical limitations such as degraded performance under bad weather and low illumination conditions, incompetent of detection and tracking overlapped objects, deficient distance and speed detection ability as well as limited field of view. Thankfully, these limitations can be well compensated by radar technology. Radar is known as a kind of all-weather sensor with high accuracy and long-range sensing capability, a radar video fused sensing system could be the key to the next level of intelligent transportation system.