Chaotic sequence anti-interference waveform design method based on adaptive binary particle swarm genetic algorithm

Abstract

The invention discloses a chaotic sequence anti-interference waveform design method based on an adaptive binary particle swarm genetic algorithm. The method comprises the following steps: randomly generating a group of binary codes to form an initial population, converting the binary codes into a decimal system, normalizing the decimal system to serve as an initial value of a chaotic sequence, and generating a group of random numbers as the speeds of individuals in the initial population; performing mature operation on parent individuals in the population by using a binary particle swarm algorithm with an adaptive inertia weight; carrying out crossover and mutation operation on chromosomes in the population by utilizing the adaptive binary genetic algorithm; performing elite retention operation; and continuing to evolve, and when the evolutionary algebra reaches the set maximum evolutionary algebra, taking the chromosome of the current generation population as an initial value for generating the chaos sequence. The method has local search and global search capabilities, search efficiency can be improved under the condition of maintaining population diversity, and a chaotic sequence with relatively good anti-interference performance is generated.

Description

technical field [0001] The invention belongs to the technical field of signal processing, and in particular relates to a chaotic sequence anti-interference waveform design method based on an adaptive binary particle swarm genetic algorithm. Background technique [0002] Radar is an electronic system that can obtain target location and other information by transmitting and receiving electromagnetic waves, and realize the detection, identification and tracking of targets all day and all day. With the increasingly complex electromagnetic environment on the battlefield and the development of radar interception technology, the performance and survivability of radar detection targets are facing severe tests. Make higher and higher demands. Therefore, the designed waveform itself has anti-intercept performance, which plays an important role in the low intercept performance of the radar. In the case of a large time-width bandwidth product, the phase-encoded signal has a large main...

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Problems solved by technology

However, the main disadvantages of this method are low algorithm efficiency, long optimization time, and when the number of transmitted waveforms is large, the iterative time for solving the coding sequence is long, and the orthogonality becomes poor. many waveforms

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