bins, and for each of the five standard target types. Their results indicate that 

 the energy-variant two-stage radar has a power saving of several dB over a con- 

 ventional, uniformly scanning radar. 



In a brief note in an IEEE Proceedings, R. F. Baum gives a comparison 

 of some two-stage and three-stage tests and of a sequential probability-ratio 

 test with a conventional detection mode." 



BINOMIAL HIGH-RESOLUTION TWO-STAGE DETECTION 



Glossary of Symbols 



M^ number of stage-A range bins per beam position 



IWg number of stage-B range bins in a stage-A range bin 



m M^Mg, number of range bins searched by the single-stage system 



used as a comparison 



R range to target 



Rjnax range to outer circumference of surveillance zone 



'■ '^^^max' normalized range 



S mean power signal-to-noise ratio (SNR) per pulse, expressed 



in decibels 



S^ SNR in dB/pulse corresponding to a "design" target at range Rniax 



Sir) SNR in dB/pulse as a function of target range, with S(l) = S^ 



S^ SNR in dB/pulse for stage A when it differs from that for stage B, S 



then denoting the latter 



FAR false-alarm rate (average number per hour) 



Pq, Pd^S^ single-scan detection probability 



PRF pulse repetition frequency — number of pulses used per second by 



the two-stage mode only, if time-shared with other modes 



a, 6 parameters of Rice and Rayleigh distributions, respectively 



' ' ' A' '^B number of pulses in a stage 



