Design Constraints of Scanning Line and Compensation of Range Cell Migration for Radar on High-speed Platform

Before shifting into tracking phase, terminal guidance radar usually scans a region which includes targets. The scanning lines, commonly designed to be straight scanning lines, are a set of traces radar main beam moving to cover the field. This paper begins with giving a compensation method of range cell migration leading in by high-speed platform along the straight scanning, and then analyzes the deviation between the scanning bar of main beam and the region where the echoes are processed. After that, it estimates the power loss derived from the deviation. Based on discussion ahead, a new kind of scanning line, called range-equation scanning line, is brought up with its compensation method of range walking. Finally, compared with the common straight scanning line, the range-equation scanning line is found to be more suitable for radar on high-speed platform with more litter deviation and lower scanning-line loss.