LAUSR

Abstract In Radars and Sonar, the pulse compression technique is used continuously to increase the range resolution, range detection and the signal-to noise ratio (SNR). This can be achieved by modulating the transmitted pulse and then correlating it to the received pulse with the transmitted signal. One of the fundamental issues concerning the aerospace and defense industries is the accuracy and precision of range resolution and SNR. SNR is vital to ensure that the target detection is not lost in the environment noise. Besides this, high range resolution is also essential for the digital receiver to identify closely spaced multiple targets. The proposed digital receiver design is primarily intended to highlight the scope of pulse compression techniques combined with linear frequency modulation waveforms (LFM) and non-linear frequency modulation waveforms (NLFM) for enhancing the range resolution of targets. The merits and demerits of each of the linear and non-linear waveforms used to achieve the required range resolution has been presented with supporting evidence using the simulations performed in MATLAB. The effects of all the different types of waveforms on the Signal-to-Noise ratio will be one of the primary considerations of this paper. The paper also includes further plan of work to make this design more robust for industrial applications as multipurpose receiver.