environments where interference such as clutter is minimized or where the target return waveform power sufficiently exceeds the antenna leakage power the duty cycle of the random noise may be increased to 100 the example depicted in fig2 3 employs single bit sampling in order to enable high speed sampling thereby eliminating the need for high speed analog to digital conversions this effectively causes a loss in detection capability as would be provided by multiple bit signal quantization of less than three decibels if the receiver gain is selected so that thermal noise saturates the receiver thus with the system saturated by thermal noise the noise interference floor during signal processing is fixed therefore a fixed threshold can be used for detection thereby eliminating the normal loss associated with a constant false alarm rate detector in addition with single bit sampling xor gates can be used as the complex multiplier to cross correlate the target return waveform samples with the delayed image of the random noise waveform samples the range counters in the random noise correlator 16 count the number of correlations over the correlation interval at the end of a correlation interval 46 the counter value for each range gate 50 52 and 54 passes to the digital signal processor 32 of fig1 and the range gate counters in the random noise correlator 16 of fig1 are reset to initiate another correlation interval after n correlation intervals defined as a coherent processing interval 48 the digital signal processor 32 can coherently process the end values output by each range gate counter in the random noise correlator 16 using standard range doppler signal processing techniques well.