Based on the physical model of optically phased array system, the relationship between the number of subarrays and the sidelobe level and mainlobe deviation is expounded, and the method is given for subarray partition based on the mainlobe deviation and elimination of the influen.

The mainlobe deviation and sidelobe level are two main aspects.

The effect of multiple jammers distributing jamming opposing sidelobe cancellation is analyzed through model building and simulation,which is on the base of the principle of sidelobe cancellation.

To cancel such interference, the spatial adaptive beamforming and sidelobe cancellation based on the horizontal auxiliary antennas are used in this paper.

The paper suggests the method that we jam the radar with sidelobe cancellation by some jammers in different directions, and the number of jamming sources is more than the number of repetition of sidelobe cancellation, namely the multidirection saturated jamming technique.

This paper introduces a side-lobe cancellation anti-jamming technique by means of the correlation method,analyzes the composition and basic principle of the system,and sets up the simulation module of the system circuit,finally gives the cancellation results of the system countering several active pressing jamming.

The side-lobe cancellation technology is an effective method for suppressing the side-lobe active disturbance.

Self-adaptive side-lobe cancellation and side-lobe blanking technologies are usually adopted in air defence radar to eliminate interference from side-lobe.

The Application of un-constant-step Adaptive Algorithm in Radar SLC System;

Based on the brief introduction of the principles of sidelobe blanking(SLB) and sidelobe cancelling(SLC) used for radar anti-jamming,the availability and effectiveness of smart noise jamming against SLB and SLC are analyzed.

The conventional adaptive side lobe cancellation algorithm and eigenspace-based technique are discussed.