Parameter determination method for position data processing of local variable sources with regular array antennas involves computing signal area and white noise area at antenna outputs by maximizing preset direction finding function

摘要

The N antenna outputs are divided into R sub-groups (2,3). Due to the regular arrangement of the antenna elements, a shift invariance in the steering vectors, A, is equal to the product of an arbitrary value, c, and the steering vector of a sub-group. The signal area and white noise area at the antenna outputs are computed for each individual time through signal value decomposition and by maximizing a predetermined direction finding function. The direction finding function states that the function of a parameter, nu, raised to k, where k is equal to 1 to K, is equal to the inverse of the summation from a point, l, in time, t, equal to 1 to L of the product of A sub l raised to h, the square of nu raised to k, U sub n, t sub l, U sub n raised to H, t sub l, and A sub l. The white noise area is orthogonal to the signal area and is represented by U sub n.