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Planar array DOA (direction of arrival) estimation method and device

A planar array and DOA technology, which is applied to the orientation device, measuring device, instrument, etc. of the determination direction, can solve the problems of high computational complexity, low estimation performance, and difficulty in applying real-time performance

Active Publication Date: 2018-09-28
SHANDONG AGRICULTURAL UNIVERSITY
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Problems solved by technology

Since the DOA estimation performance is limited by the array aperture, it is very difficult to deploy a large-aperture array antenna in a space with limited size, resulting in low estimation performance
At the same time, two-dimensional spatial spectrum search and two-dimensional angle pairing will lead to high computational complexity, so it is difficult to apply to occasions with high real-time requirements

Method used

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  • Planar array DOA (direction of arrival) estimation method and device
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  • Planar array DOA (direction of arrival) estimation method and device

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Embodiment Construction

[0065] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0066] figure 1 A schematic flowchart of a planar array DOA estimation method 100 according to an embodiment of the present invention is shown.

[0067] Such as figure 1 As shown, the planar array DOA estimation method 100 includes the following steps:

[0068] Step S102: Use a planar array to receive a signal from at least one signal source, the planar array includes at least one parallel coprime array, and the parallel coprime ...

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Abstract

The invention discloses a planar array DOA (direction of arrival) estimation method and device. The planar array DOA (direction of arrival) estimation method includes the following steps that: step 1,a planar array is adopted to receive signals from at least one signal source, wherein the planar array comprises at least one parallel co-prime array, wherein the parallel co-prime array comprises co-prime linear sub-array pairs which are parallel to each other; step 2, the virtual received signals of the co-prime linear sub-array pairs are calculated and constructed on the basis of the actuallyreceived signals of the co-prime linear sub-array pairs; and step 3, the numerical value of the DOA of the at least one signal source is estimated on the basis of the virtual received signals of the co-prime linear sub-array pairs. The method and device can be applied to conditions where array size is limited and real-time requirements are high. With the planar array DOA (direction of arrival) estimation method and device of the invention adopted, low-complexity and high-accuracy direction of arrival estimation can be effectively provided with fewer array elements.

Description

technical field [0001] The invention relates to the field of communication signal processing, in particular to a planar array DOA estimation method and equipment. Background technique [0002] Direction of Arrival (DOA) estimation is an important research content in array signal processing, and it is widely used in radar, sonar and other fields. According to certain rules, multiple antennas are arranged to form an antenna array, which can be used to measure the incoming wave direction of the radiation source, so as to realize the direction finding of the radiation source. In the civil field, fast and accurate direction finding and positioning is an urgent requirement to realize radio spectrum monitoring and illegal frequency equipment (such as pseudo base stations, black broadcasting, etc.) to find and locate. In the military field, fast, accurate and covert direction finding and positioning of target radiation sources can not only protect oneself to the maximum extent, but...

Claims

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Application Information

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IPC IPC(8): G01S3/00
CPCG01S3/00
Inventor 兰鹏孙丰刚孙波
Owner SHANDONG AGRICULTURAL UNIVERSITY