Signal Design For High Range Resolution Radar

Pulse compression techniques allow radar designers to utilize advantage of long duration pulse at the transmitter and range resolution of short pulse at the radar receiver. Pulse compression can be achieved by either phase coding or frequency coding of radar waveform, but major disadvantage of pulse compression is unwanted autocorrelation sidelobes. Infect sidelobes act as self-generated clutters, hence for better radar signal design the sidelobes level should be as minimum as possible for given code. In this paper, Discrete Frequency-coded (DFC) sequences are synthesized using Modified Simulating Annealing Algorithm (MSAA). Optimized DFC sequences have good autocorrelation properties and high pulse compression ratio. The DFC radar waveform discussed in this paper can be used in high range resolution radar to resolve closely spaced target, also improve the detection capability of pulse compression radar and can also be used in Low Probability of Intercept (LPI) Radar. The DFC waveform discussed in this paper not only improves measuring accuracy but also will be useful for Electronics Support Measure (ESM) of radar systems.