Publication

Abstract : Radar signal generation and processing techniques are developing with an aim of reducing interference and signal interception. Signal jamming and signal detection have become emerging areas of interest in the field of radar engineering. So there is a need for design and development of new waveforms which are less detectable by the hostile receiver and less susceptible to jamming. In the work mentioned here, Stepped Frequency Waveform (SFW) is modulated with phase modulation techniques such as Barker codes and polyphase codes to improve the complexity and to reduce the detectability of waveform thus increasing the bandwidth of waveform and limiting the transmitted power of the waveform by using pulse compression techniques. The SFW considered here is generated having varying step size. Pulse compression technique is employed here in order to generate a pulse having a range resolution of shorter pulse and transmitted power of longer pulse. The modulated waveform characteristics have been studied and analyzed using ambiguity functions of the waveform.