Mathematical model of discriminator for signals with fluctuations and thermal noise
Abstract
A statistical model is constructed for describing an angle discriminator in a radar station with a conical scan and with a digital computer as a data processing base. The model consists of four modules. The first one pertains to the antenna radiation pattern and scanning mode. The second one pertains to the amplitude fluctuations and thermal noise, with a generator of random normal numbers as well as with appropriate multiplications and additions. The third one pertains to passage of signal and interference through a receiver with amplitude detection and automatic gain control. The fourth one pertains to signal filtration and estimation, with a bandpass filter, phase detector, lowpass filter, and strobing device. The amplitude distribution of incoming reflected signals is assumed to be a Rayleigh or quasiRayleigh random one, the thermal noise in the receiver is assumed to be a white one with zero mean and unity standard devivation, and the center frequency of the bandpass filter is assumed to be equal to the scan frequency.
 Publication:

USSR Rept Electron Elec Eng JPRS UEE
 Pub Date:
 January 1985
 Bibcode:
 1985RpEEE.......29B
 Keywords:

 Angles (Geometry);
 Digital Radar Systems;
 Discriminators;
 Mathematical Models;
 Radar Scanning;
 Thermal Noise;
 Amplitudes;
 Antenna Radiation Patterns;
 Automatic Gain Control;
 Bandpass Filters;
 Low Pass Filters;
 Modules;
 Signal To Noise Ratios;
 Sine Waves;
 Statistical Analysis;
 Communications and Radar