Radar Signals Laboratory Manual

Description

The Radar signals laboratory has been developed as a tool for hands-on study of digital specialized processors (SP) for detecting and determining the angular position of the target in surveillance radars, using the incoherent sequence of radio pulses as a probing signal.
The laboratory has been designed to demonstrate the possibility of designing and developing a multi-channel radar system, using a specialized processor, and for the introduction of time and amplitude sampling devices. One of the most difficult assignments in radar construction is the selection of the probing signal. The tactical characteristics of the radar (namely: the operation and resolution range, measurement accuracy, the structure and main characteristics of the transmitting and receiving tract, as well as the radar security level, its weight, dimensions and price) all depend on the probing signal.

Features

Device for forming and matched filtering of chirped pulse signals
Device for forming and matched filtering of pulse signals with pseudorandom phase manipulation
Device for forming and correlation processing of pulse signals with pseudorandom phase-manipulation
Digital device for detection of the pack of coherent pulses on the background of passive interference
Specialized processor for digital quasi-optimal processing of incoherent pulse signal packs
Specialized processor for digital processing of the pack of incoherent radio pulses with stabilization of false alarm probability with the help of the modified signed detector

Technical Specifications

	During the lab theoretically and experimentally will be studied the following characteristics:
Laboratory work № 1	main characteristics of the LFM signal and of the matched filter; range and speed resolution of a single LFM signal; measurement of the signal/noise ratio at the matched filter output; influence of square phase and modulation distortions, influence of possible Doppler frequency mismatches.
Laboratory work № 2	main characteristics of the PSK signal with 13-digit Barker code modulation and of the matched filter; range and speed resolution of a single PSK signal; the signal/noise ratio at the matched filter output; influence of possible Doppler frequency mismatches.
Laboratory work № 3	main characteristics of a PSK signal with modulation on M-code; normalized autocorrelation function (ACF) of a single PSK signal; range and speed resolution of a single PSK signal; signal/noise ratio at the signal processing channel output; influence of possible Doppler frequency mismatches.
Laboratory work № 4	work of the digital quasi-optimal detector; detection characteristics of a single pulse and a pulse packet; accuracy characteristics of evaluation of the angular position of the target in the center of the pack.
Laboratory work № 5	work of the digital quasi-optimal nonparametric detector; dependence of the probability of false alarm in MSD; the effect of suppressing the close weak target in MSD; the detection characteristics of a single pulse and a pack of incoherent pulses.
Laboratory work № 6	the work of separate nodes of digital processing device; the passage of the signal and noise through the notch filter; characteristics of processing device.

Resources

manual