Research on the simplified algorithm of unobstructed areas radar calculation

Based on the current methods of the radar´s unobstructed areas calculation, this paper presents a simplified calculation, which is called the gradually reduced unobstructed areas calculation.. The projection of unobstructed areas that this method produced is intuitive, and the detection of invasive aerocraft is simple, which is applicable to the calculation of a smaller range of the radar´s scan. Though the verification of MATLAB, the processing speed and space using have been greatly improved. In other words, it improves not only time efficiency but also space efficiency.