초록 ▼

A method for generating a thinned array having an optimal directional response wherein an initial population of possible element occupancy patterns is generated and a relative fitness value for each of the element occupancy patterns in the initial population is determined. Successive populations are

A method for generating a thinned array having an optimal directional response wherein an initial population of possible element occupancy patterns is generated and a relative fitness value for each of the element occupancy patterns in the initial population is determined. Successive populations are generated by manipulating the element occupancy patterns using reproduction, crossover, mutation, elitism, and equality operators. The array response of each occupancy pattern in the successive population is evaluated to determine a fitness value for each. The process of generating and evaluating successive populations is repeated for a specified number of generations, until the maximum population fitness does not significantly increase between generations, or until the population diversity decreases.

대표청구항 ▼

[ What is claimed is:] [1.] A method for determining placement of elements within a discrete lattice array comprising the steps of:building a plurality of arrays, wherein each array is defined by an element placement pattern indicating the placement and weighting of each element within the array, sa

[ What is claimed is:] [1.] A method for determining placement of elements within a discrete lattice array comprising the steps of:building a plurality of arrays, wherein each array is defined by an element placement pattern indicating the placement and weighting of each element within the array, said plurality of arrays defining an initial population;determining a fitness value for each array within said plurality of arrays in the initial population using a fitness function which provides a measure of a relationship between peak sidelobe level and mainlobe width of an angular response of an array;generating a reproduction population by selecting arrays from the initial population with probability proportional to their fitness values;generating a successor population from said reproduction population, said successor population comprising a plurality of arrays wherein each array is defined by an element placement pattern indicating the placement and weighting of each element within the array;generating a fitness value for each array in the successor population using said fitness function; andrepeating the steps of generating a reproduction set, generating a successor population, and generating a fitness value for each array in the successor population until the successor population meets a threshold.