摘要
现有的ＰＰＩ雷达信号微机显示系统采用硬件来实现极坐标－直角坐标转换．为提高系统灵活性，同时充分利用微机资源，降低成本，讨论了在ＰＰＩ雷达信号微机显示系统中极坐标－直角坐标映射的软件实现．结合实例设计了一种快速且占用内存较少的查表映射方法．采用该映射方法，配合相应的数据输入缓冲设备。
Polar coordinates orthogonal coordinates conversion in radar PPI signal displaying systems using microcomputer must be very quick and efficient for real time processing. The existing system used special hardware to implement the conversion. For system flexibility and lower cost, this paper discussed the software realization of polar coordinates orthogonal coordinates conversion. An inquiry list mapping method which did not use much inside memory was designed. By this mapping method, with the assistance of corresponding data buffer, the realtime displaying and processing of PPI radar signal become possible for an ordinary personal computer to perform.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
1999年第1期57-60,共4页
Journal of Shanghai Jiaotong University
关键词
雷达信号
坐标转换
微机显示系统
PPI雷达
radar signal
coordinates conversion
inquiry table
display memory
display buffer region
branch table
