Abstract
Abstract A completely photonic approach to generate a arbitrary microwave waveform having chirp nature is proposed and experimentally demonstrated. A chirp signal may be defined as the signal whose frequency increases or decreases with respect time. Signal may have arbitrary shape, it may be sinusoidal wave, triangular wave, or may have some other wave shape. Chirp signal is used to identify the pattern of moving signal having deterministic nature. In this paper an arbitrary chirped microwave waveform has been generated experimentally by using four c-band lased schemes. The chirp microwave waveform can be used in Radar system to improve its range Doppler resolution. The paper give the specific details about various performance parameters like input signal frequency and power, output signal parameters viz output frequency, chirp rate, chirp bandwidth, time bandwidth product (TBWP), etc. The overall model and its performance parameters are computed through experimental setup.
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