Distress radiolocation method and system

Distributed distance measurement system for locating a...

Distributed jammer system

Distributed orbit modeling and propagation method for a...

Distributed-array radar system comprising an array of...

Diver's hand held sonar

Diversified transmission multichannel detection system

Doppler apparatus

Doppler consistent hyperbolic frequency modulation

Doppler correlation radar system

Doppler effect measuring device for radiation-transmitting...

Doppler navigation beacon system with angular filter

Doppler radar detection system

Doppler radar for detecting and determining position of...

Doppler radar for forecasting collision

Doppler radar module

Doppler radar receiver

Doppler radar sets with target direction sensing capability

Doppler radar velocity measurement apparatus

Doppler radar with target velocity direction and range...