1 results about "Affine projection" patented technology

The application relates to the technical field of adaptive filtering, and discloses a deviation compensation affine projection adaptive filter based on a logical distance criterion, wherein a desired signal vector, a noisy input signal vector and a matrix, and an adaptive weight vector are respectively constructed according to a desired signal sample value, a noisy input signal sample value and an adaptive weight value; an anti-impulse error square median is obtained according to an estimated error signal, an error signal variance estimation value is calculated, and an input noise variance estimation value is calculated in combination with a noisy input signal vector and an adaptive weight vector variance power estimation value; a derivative and a second derivative of a logical distance function are calculated according to an estimated error signal vector; a deviation compensation matrix is calculated by using the second derivative of the logical distance function, an intermediate matrix, a vector formed by a diagonal line of the intermediate matrix, a deviation compensation vector and the input noise variance estimation value, the adaptive weight value is updated, and adaptive filtering of a system output signal to be estimated is realized.