1. A method wherein each of variables k and m starts out at with a value of zero, and comprising the steps of: transmitting (k+1) th subpulse of (m+1) th pulse of a transmit signal from a transmitter, wherein the transmit signal includes M pulses and wherein each of the M pulses has K subpulses, wherein each of M and K are positive integers; receiving a return signal due to the (k+1) th subpulse of the (m+1) th pulse of the transmit signal at a receiver; supplying a filter input signal for the (k+1) th subpulse of the (m+1) th pulse, which is based on the return signal due the (k+1) th subpulse of the (m+1) th pulse, to a plurality of filter inputs of a corresponding plurality of filters; using the plurality of filters to produce a corresponding plurality of filter output signals for the (k+1) th subpulse of the (m+1) th pulse, at a corresponding plurality of filter outputs; combining the plurality of filter output signals for the (k+1) th subpulse of the (m+1) th pulse to produce a combination filtered signal for the (k+1) th subpulse of the (m+1) th pulse; supplying the combination filtered signal for the (k+1) th subpulse of the (m+1) th pulse to a synthetic aperture radar processor; using the synthetic aperture radar processor to produce a coarse range/cross range resolution synthetic aperture radar map for the combination filtered signal for the (k+1) th subpulse of the (m+1) th pulse of the transmit signal; incrementing k, and then repeating the above steps, until k equals the number K; incrementing m, restarting k at a value of zero, and then repeating the above steps, until m equals the number M; wherein the above steps produce a plurality of coarse range/cross range resolution synthetic aperture radar maps, one coarse range/cross range resolution synthetic aperture radar map for each subpulse of each pulse of the transmit signal; combining the coarse range/cross range resolution synthetic aperture radar maps for the i th subpulses of all M pulses, for i=1 to K, to produce K coarse range resolution synthetic radar aperture maps; and combining the K coarse range resolution synthetic radar aperture maps to produce a final combined map.