In the frequency domain, sampling of curvature and offset in least square PRT was investigated. The critical sampling interval of curvature and scanning range to guarantee the operation stability and anti aliasing were derived.

• 在频率域对最小平方抛物线Radon变换中的曲率参数和偏移距参数的采样进行了研究 ,得到了保证方法稳定及抗假频的曲率参数的最小采样间隔和扫描范围 ,分析了由于偏移距采样不足造成的后果。