A method and system for generating a low observable waveform for an airborne radar facing uncertain target scattering characteristics

Abstract

The application discloses a kind of methods and systems for generating airborne radar low observable waveform facing uncertain target scattering characteristics, the method includes: based on spatial information interaction theory, the expected interaction information amount between target scattering signal and radar receiving signal of maneuvering target in state transition angle interval is constructed, from the angle of intercept receiver signal processing link, with the log-likelihood ratio expected value of intercepted signal and the interaction information amount between intercept receiver input and output signal, fusion construction intercept-identification joint performance evaluation index;Under the given transmitting power constraint, the frequency domain waveform multi-objective optimization model with the maximum radar expected interaction information amount and the minimum intercept-identification joint performance index as target is constructed, and is converted into convex optimization problem for solving;Based on random sequence step frequency modulation signal, the time domain waveform implementation mode satisfying the frequency domain optimization result is designed, and the performance of the designed waveform is verified;The application satisfies radar resolution performance.

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