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Fast real-time space spectrum estimation ultra-resolution direction-finding device and method thereof

A technology of spatial spectrum estimation and direction finding device, applied in the field of direction finding, can solve the problems of difficult real-time requirements and large amount of calculation, and achieve the effect of ensuring high-speed real-time operation, improving real-time performance and ensuring accuracy

Inactive Publication Date: 2011-01-26
HARBIN ENG UNIV
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Problems solved by technology

However, the amount of calculation of this method is very large, which makes it difficult to apply to occasions requiring real-time performance.

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  • Fast real-time space spectrum estimation ultra-resolution direction-finding device and method thereof
  • Fast real-time space spectrum estimation ultra-resolution direction-finding device and method thereof
  • Fast real-time space spectrum estimation ultra-resolution direction-finding device and method thereof

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Embodiment Construction

[0011] The present invention is described in more detail below in conjunction with accompanying drawing example:

[0012] to combine figure 1 Said that the fast real-time spatial spectrum estimation super-resolution direction finding device of the present invention is mainly composed of three parts: a master-slave DSP parallel signal processing module composed of four DSPs, a logic control module composed of an FPGA, and a communication interface module. The communication interface module receives the sampling data of each channel from the digital receiver and reports the calculated angle to the host computer. The master-slave DSP parallel signal processing module is the core module of the signal processor, which completes all signal processing algorithms in high speed and real time. The algorithm mainly uses the orthogonality between the signal subspace and the noise subspace in the sampled data to form a sharp needle-shaped spatial spectrum in a given angle region, and the ...

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Abstract

The invention provides a super-resolution direction-finding device used for rapidly and real time estimating a spatial spectrum and a direction-finding method thereof. The super-resolution direction-finding device mainly consists of a principal-subordinate DSP parallel signal processing module formed by a group of DSP, a logic control module formed by FPGA and a communication interface module, wherein, the communication interface module is used for receiving sampling data of all channels from a digital receiver and reporting calculated angles to a host computer; a principal DSP and a subordinate DSP in the parallel signal processing module are connected in a bus-sharing close coupling mode, and a data bus is utilized to transmit the middle data among DSP; a DSP bus and the logic control module are mutually connected by the data bus, an address bus and a control bus. The invention can be used for rapidly and precisely finding direction for a plurality of radiant sources and further precisely positioning the radiant sources, and also can be used for tracking and positioning moving radiant sources according to requirements, or can be arranged on a moving device to track and position the radiant sources, and simultaneously, the invention also can be used for the boat positioning, the maritime search and rescue, the radar exploration in a civil aviation airport, the direction finding of undesired signals, and the like.

Description

(1) Technical field [0001] The invention relates to a direction-finding device, and the invention also relates to a direction-finding method. Specifically, it is a device and method for detecting electromagnetic wave radiation source. (2) Background technology [0002] The existing device for measuring the direction of the radiation source mainly adopts the principle of phase interferometer, and uses the phase comparison system for direction finding. The disadvantage of the phase comparison system is that it can only perform direction finding on a single signal, and the direction finding accuracy is not high enough, and multi-valued ambiguity is prone to appear in the high frequency band. The spatial spectrum estimation method proposed recently can break through the Rayleigh limit and realize high-precision super-resolution direction finding. However, the amount of calculation of this method is very large, which makes it difficult to apply to occasions requiring real-time ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S3/00
Inventor 司锡才彭巧乐
Owner HARBIN ENG UNIV
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