§1.序利用三个距离及三个距离变化率,即3RR系统,能独立地测定空中目标的位置及速度。与单站测量比较,在一定的条件下,多站测量具有很多优点。单台雷达由斜距、方位角及仰角的信息进行定位,在远距离上,由于角度信息贡献很小使定位精度大大下降。作为单台设备的短基线干涉仪,在远距离时两个比相天线近乎处于一点,角度信息 §1. The sequence uses three distances and three distance rates of change, the 3RR system, to independently determine the position and velocity of the airborne target. Compared with single-station measurement, under certain conditions, multi-station measurement has many advantages. A single radar from the slope distance, azimuth and elevation information for positioning, in the long distance, due to the contribution of a small angle so that the positioning accuracy greatly reduced. As a single device, a short baseline interferometer, at a distance of two near-phase antennas at a point, the angle information