Efficiency of multitarget signal detection by digital radar data processing devices
Abstract
The efficiency of multitarget signal detection by a multichannel digital radar data processing device which uses the algorithm of discrete Fourier transformation for spectral analysis is estimated, considering that each frequency channel contains a phase detector, and analogtodigital converter, a memory, a Fourier transformation stage, a sampler of maximum amplitudes, a threshold device, and an output commutator switch. The problem is formulated for M channels processing m statistically independent signals which cannot jump from one channel to another during detection. Into consideration is taken the possibility of a high falsealarm probability at a low signaltonoise ratio, because of the detection threshold then being exceeded in n m channels. The correctdetection probability D m/M is calculated on this basis. The theoretical results were verified on a computer by statistical simulation of algorithms of the Monte Carlo method, a generator of random numbers and with a noise generator shaping a normal white noise accompanied by a consonantly fluctuating phase packet with unknown initial phase.
 Publication:

USSR Rept Electron Elec Eng JPRS UEE
 Pub Date:
 January 1985
 Bibcode:
 1985RpEEE.......10P
 Keywords:

 Data Processing;
 Digital Radar Systems;
 Signal Detectors;
 Spectrum Analysis;
 Target Acquisition;
 Algorithms;
 Amplitudes;
 Analog To Digital Converters;
 Computerized Simulation;
 Efficiency;
 Estimates;
 Fourier Transformation;
 Monte Carlo Method;
 Random Numbers;
 Signal To Noise Ratios;
 White Noise;
 Communications and Radar