A bistatic radar system has a transmitter and receiver located at different locations. A problem with certain bistatic radars is gate walk, or range walk, which puts the transmitter and receiver out of synchronization, giving a phantom velocity to the tracked object. The new method transmits pulses at a first rate controlled by a first local oscillator. A receiver is configured to receive pulses at a second rate controlled by a second oscillator. A processing device is configured to synchronize, with respect to the first rate, in-phase quadrature data received from the receiver using a keystone formatting technique.
Patent Number: 8,704,703
Date Issued: April 22 2014