Add to those covered up achievements the recently revealed technologies such as through the wall radar, airport criminal intent detectors, and electronic sight for the blind.
Considering radar as a point in variational target body coordinate, we can study the azimuth and elevation of line of sight of radar in target body coordinate.
将雷达转换为姿态角不断变化的目标体坐标系下一点，研究雷达视线在目标体坐标系下的方位和高低角。
3
Furthermore, meteor trails scattering can affect the performance of a beyond-light-of-sightradar system.