Frequencies design method of multi-frequency sar based on maximum mutual information criterion

Aiming at the problem of insufficient target information acquisition caused by the experience of frequencies selection in the existing multiband SAR system, the optimal frequencies design method of multi-frequency SAR under the maximum mutual information criterion (MMIC) is proposed. After constructing the multi-frequency SAR information acquisition system model, the frequencies design objective function of discrete signal under MMIC is derived. With the limit of engineering practice-frequencies number, range and interval, the constrained optimization problem is constructed, and the optimal frequencies is solved by genetic algorithm. Simulation experiments for specific target verify the effectiveness of the proposed frequencies design method.