Patent ID: 7633434

Claim:
A pulse radar system comprising: a transmit clock generator for generating a transmit clock at a transmit clock frequency; a transmit pulse generator triggered by the transmit clock for generating transmit pulses at the transmit clock frequency and for conveying the transmit pulses to be transmitted via an antenna to a target; a sampling clock generator for generating a sampling clock at a sampling clock frequency different from the transmit clock frequency; a sampling pulse generator triggered by the sampling clock for generating sampling pulses at the sampling clock frequency; a signal mixer for generating an intermediate frequency signal by mixing echo pulses reflected from the target with the sampling pulses; and a signal integration device for integrating the intermediate frequency signal, wherein the signal integration device comprises a sample and hold circuit having a switch and a hold capacitor, the switch being arranged to sample the intermediate frequency signal at the sampling clock frequency, and wherein the signal integration device further comprises a control pulse generator for generating switch control pulses to control the switch at the sampling clock frequency and with an adjustable time delay to the sampling pulses.