Complex signal anti-interference matrix upper triangularization method and signal anti-interference processing device

Abstract

The invention relates to a complex signal anti-interference matrix upper triangularization method and a signal anti-interference processing device. The method comprises the steps of conducting CORDIC twiddle modulo operation on input first complex signal data and stored real number data in a boundary treatment unit to obtain a modulo end value and a twiddle factor, updating the real number data with the modulo end value, and outputting the obtained twiddle factor to a backward internal treatment unit; conducting two-stage CORDIC twiddle operation on the input complex signal data and stored third complex signal data in the internal treatment unit according to the twiddle factor output by the forward boundary treatment unit to obtain fourth complex signal data and fifth complex signal data, updating the third complex signal data with the fifth complex signal data, and outputting the fourth complex signal data to a follow-up boundary treatment unit or internal treatment unit. By the adoption of the scheme, operation speed can be increased, and resource occupancy rate can be reduced.

Description

technical field [0001] The invention relates to the technical field of complex signal processing, in particular to a complex signal anti-jamming matrix upper triangulation method and a signal anti-jamming processing device. Background technique [0002] In Beidou navigation technology, anti-jamming is to ensure that the expected signal loss is as small as possible. The anti-jamming module is to effectively suppress the sudden narrow-band interference and suppressive interference in the external environment, so as to ensure the normal operation of the back-end receiver. a preprocessing method. In the implementation process, the essence of the anti-jamming software is to adopt an adaptive filtering optimal criterion, adaptively configure the weight of the input signal, generate a deep null in the direction of the interference, and realize interference cancellation, so as to minimize the output error . The selection of the anti-jamming algorithm directly affects the anti-jamm...

AI Technical Summary

Problems solved by technology

In the extension of CORDIC, a matrix with exponents can be added to realize the complex number rotation of CORDIC. However, due to the existence of complex exponent operations in this method, in the FPGA implementation, or using the common lookup table method, the resources are very large and the real-time performance is reduced. , not suitable for engineering implementation

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