Two-dimensional temporal and spatial correlated Lognormal clutter sequence generated based on FPGA

Abstract

A two-dimensional temporal and spatial correlated lognormal clutter sequence generation method based on FPGA is proposed. This method solves the problem of long generation time generating the sequence based on the DSP, due to the higher sampling rates or long data, which is difficult to meet real-time requirements of the data generated‥ In this paper, based on FPGA, using a one-dimensional temporal correlated Lognormal clutter sequence and one-dimensional Gaussian random sequence, using a single precision floating-point matrix multiplier and adders and multipliers of FPGA IP core, methods are proposed to generate two-dimensional temporal spatial correlated lognormal clutter sequence. One single precision floating-point matrix multiplier includes an input data buffer and output data buffer, a single-precision floating-point adder, a single-precision floating-point multiplier and data access control module. Two-dimensional temporal and spatial correlated lognormal clutter generated each step employs parallel processing method, the method avoids the problems of existing methods that instruction cycles execute serially and meet the requirements of real-time data generation.