Research and Realization of Coordinate Conversion in Radar Video Display

Polar coordinates-orthogonal coordinates conversion needs to be solved in radar PPI signal displaying. Traditional coordinate conversion needs a large deal of calculation and high standard of computer main frequency and memory, and can not meet requirement of real-time processing of system. In this paper we propose a new look-up table increment method, to create a two-dimensional array whose indexes are azimuth and distance in polar coordinates and whose content is composed of corresponding rectangular coordinate points, which has not only high-speed calculation but also high display accuracy.