HY-1000 altimeter is a radar altimeter specially designed for a certain type of target missile aircraft. It is a small full-function radio altimeter conforming to aerospace standards. It is a key component for longitudinal altitude channel control. It can be widely used in cruise missiles and UAVs to measure the relative sea level or ground height. HY-1000 adopts linear modulation coefficient to adapt to height change technology and echo signal narrow-band receiving technology, which improves the product's anti active interference ability; adopts coherent local oscillator mixing, which has superior anti same frequency asynchronous interference performance; adopts echo signal spectrum front detection technology, which improves the tracking accuracy; adopts seriation, standardization, modularization and other three design, which has good product inheritance Mature and reliable.