A two-dimensional DOA estimation method based on vivado HLS

Abstract

The invention discloses a two-dimensional DOA estimation method based on Vivado HLS, comprising: step 1: obtaining radar echo signals and calculating the autocorrelation matrix of the echo signals and the inverse matrix of the autocorrelation matrix; step 2: According to the accuracy requirements of the echo signal and the rough estimate, the initial steering vector matrix of the space point is obtained and stored in advance; Step 3: according to the inverse matrix of the autocorrelation matrix and the initial steering vector matrix to the echo signal direction estimation to determine the direction of arrival; step 4: optimize step 3 to obtain the corresponding intellectual property kernel; step 5: call the intellectual property kernel in the FPGA to complete two-dimensional DOA estimation. The two-dimensional DOA estimation method provided by the invention shortens the development period, improves the development efficiency, improves the portability of the program, and reduces the power consumption of the system.

Description

technical field [0001] The invention belongs to the technical field of radar signal processing, and in particular relates to a two-dimensional DOA estimation method based on Vivado HLS. Background technique [0002] In the fields of radar detection and tracking, satellite navigation, and mobile communication, it is necessary to estimate the direction of arrival of effective signals in the working environment for subsequent processing. The MUSIC algorithm (Multiple Signal Classification) is one of the classic algorithms for spatial spectrum estimation, and it is often used to estimate the direction of arrival. In actual scenarios, two-dimensional DOA (Direction of Arrival) estimation is generally required to achieve synchronous acquisition of target azimuth and elevation angle information. [0003] At present, FPGA (Field Programmable Gate Array) or DSP (Digital Signal Processing) are usually used to realize the classic MUSIC algorithm to complete DOA estimation. [0004] H...

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Problems solved by technology

[0004] However, the existing FPGA implementation technology has a long development cycle, requires technicians to be familiar with RTL debugging, and the FPGA program can be modified many times to achieve ideal results, and the portability is low; while DSP development efficiency is high, but the system power consumption bigger

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