PHASE INTERFEROMETER RADAR

摘要

An improved phase interferometer radar provides a high-sensitivity output in accordance with the elevation angle of terrain as a function of range. The transmitted frequency is cyclically varied to produce corresponding variations in the apparent elevation angles. A plurality of synchronous detectors are employed which respond to such cyclic variations and provide a low-sensitivity signal indicating the elevation angle of terrain as a function of range. The high-sensitivity signal exhibits a plurality of ambiguities which are eliminated by employing the low-sensitivity signal to control the gating of the high-sensitivity signal to a display device.