Abstract: A radar system has a phased-array antenna and plural local oscillators for controlling local transmit/receive units. The local oscillators are slaved to a master oscillator. The analog clock signal paths are subject to relative changes in electrical length. The electrical lengths of the signal paths are measured by phase-detecting forward- and reverse-direction clock signal flows. The phase-detected information for each signal path is a measure of the time delay. The radar command processor receives the measure of time delay and corrects the radar operation in response thereto.

Abstract: A method for active ranging, such as radar, which sequentially transmits pulses of mutually different waveforms. Receive processing is performed concurrently for all the transmitted waveforms during each interpulse interval, to thereby provide range ambiguity resolution together with continuous return signal integration.