Method for detecting traffic offences in an area with traffic lights by measuring the rear of vehicles using a radar device

摘要

The method involves triggering a camera (7) for producing photographic evidence, if an appropriate vehicle (3) outside of a green phase of a stop line (5) is at a photo line (10). The radial velocity of provisional expected time point at which front of appropriate vehicle crosses a stop line is calculated using path-time law based on vertical distance of stop line to a FMCW radar apparatus (1) and the setting up angle from specific position. The photo time point at which the vehicle front is located at the photo line is calculated from updated expectation time using path-time law.