Photonic generation of a dual nonlinear chirp microwave waveform in Ku-band and its comparative study with dual linear chirping capability to distinguish range-Doppler coupling in radar application

Due to very high frequency and large time bandwidth product, photonic generation, and processing of arbitrary microwave waveforms has been an interesting topic in the area of remote sensing application. Here, a photonic technique is proposed for the generation of a dual non-linear chirp microwave waveform in Ku-band. This methodology is based on the principle of optical external modulation through cascading of two Mach-Zehnder Modulators. Its application has been investigated in modern radar system in terms of range-Doppler resolution. A comparative study has been done on the performance analysis of a dual chirp signal with nonlinear and linear chirping capability.

[1]  Jianping Yao,et al.  Photonic generation of microwave arbitrary waveforms , 2011, 16th Opto-Electronics and Communications Conference.

[2]  Robert E. Milleit.  A Matched-Filter Pulse-Compression System Using a Nonlinear FM Waveform , 1970, IEEE Transactions on Aerospace and Electronic Systems.

[3]  Norio Tagawa,et al.  Doppler measurement using a pair of FM-chirp signals , 2003, IEEE Symposium on Ultrasonics, 2003.

[4]  Robert J. Fitzgerald,et al.  Effects of Range-Doppler Coupling on Chirp Radar Tracking Accuracy , 1974, IEEE Transactions on Aerospace and Electronic Systems.

[5]  Jianping Yao,et al.  Dual-Chirp Microwave Waveform Generation Using a Dual-Parallel Mach-Zehnder Modulator , 2015, IEEE Photonics Technology Letters.

[6]  Steven Kay,et al.  Iterative Method for Nonlinear FM Synthesis of Radar Signals , 2010, IEEE Transactions on Aerospace and Electronic Systems.

[7]  M. Skolnik,et al.  Introduction to Radar Systems , 2021, Advances in Adaptive Radar Detection and Range Estimation.

[8]  Ritesh Kumar,et al.  A photonic scheme for the generation of dual linear chirp microwave waveform based on the external modulation technique and its airborne application , 2017 .

[9]  N. Levanon,et al.  Basic Radar Signals , 2004 .

[10]  Ritesh Kumar,et al.  Dual-chirp Arbitrary Microwave Waveform Generation by Using a Dual Parallel Mach-Zehnder Modulator Feeding with RF Chirp Signal , 2016 .

[11]  Chao Wang,et al.  Photonic Generation of Chirped Millimeter-Wave Pulses Based on Nonlinear Frequency-to-Time Mapping in a Nonlinearly Chirped Fiber Bragg Grating , 2008, IEEE Transactions on Microwave Theory and Techniques.