Enhanced Radar Performance using Optimized Hybrid Signal based on Nonlinear and Linear Frequency Modulation
- Resource Type
- Conference
- Authors
- Youssef, Ahmed; Elhoshy, Mostafa
- Source
- 2023 International Telecommunications Conference (ITC-Egypt) Telecommunications Conference (ITC-Egypt), 2023 International. :366-371 Jul, 2023
- Subject
- Aerospace
Bioengineering
Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Computing and Processing
Engineered Materials, Dielectrics and Plasmas
Fields, Waves and Electromagnetics
General Topics for Engineers
Photonics and Electrooptics
Power, Energy and Industry Applications
Robotics and Control Systems
Signal Processing and Analysis
Transportation
Frequency modulation
Chirp modulation
Surveillance
Doppler radar
Radar applications
Telecommunications
Doppler effect
Radar systems
tangent nonlinear frequency modulation
particle swarm optimization
sidelobe level reduction
- Language
Nonlinear frequency modulated (NLFM) waveforms are widely used in radar applications due to their low range sidelobes and high range resolution. In this paper, we propose an optimized hybrid radar signal based on linear and sigmoidal S-shapes using particle swarm optimization (PSO). The proposed signal achieves a significantly reduced sidelobe level while preserving mainlobe width, making it suitable for various radar applications. The proposed signal also exhibits the desirable Doppler tolerance property. The analytical description of the proposed signal and the optimization process using PSO are presented in detail. The performance of the proposed signal is evaluated under Doppler effect, and its limitations are discussed. The results show that the proposed signal outperforms existing linear and nonlinear waveforms in terms of sidelobe suppression, and mainlobe width with fair Doppler tolerance.