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Antenna array signal processing method and device

An antenna array and signal processing technology, applied in the field of antenna array signal processing methods and devices, can solve problems such as affecting the estimation accuracy of the arrival angle and being unable to be directly applied to commercial equipment.

Inactive Publication Date: 2017-03-15
TSINGHUA UNIV
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Problems solved by technology

The unknown phase deviation seriously affects the accuracy of the angle of arrival estimation, making the traditional angle of arrival estimation algorithm unable to be directly applied to commercial equipment
However, the existing work is either only applicable to fixed devices with known relative positions or requires a large number of human operations to form a synthetic aperture radar

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  • Antenna array signal processing method and device
  • Antenna array signal processing method and device
  • Antenna array signal processing method and device

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Embodiment Construction

[0057] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the Some, but not all, embodiments are invented. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0058] see figure 2 , this embodiment discloses an antenna array signal processing method, including:

[0059] S10. Calculate the phase difference of the OFDM signal received by the antenna array before and after the first and second rotations, and use the inertial sensor to measure the rotation angles of the first and second rotations;

[0060] S11. Calculate an equ...

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Abstract

The invention discloses an antenna array signal processing method and a device. Direction of arrival (DOA) estimation with least user operation is realized on commercial wireless equipment, and an estimation method is expanded to the three-dimensional space and the multi-path environment. The method comprises steps that S10, phase difference of OFDM signals received before and after first and second rotation of an antenna array is respectively calculated, and an inertia sensor is further utilized to measure rotation angles of first and second rotation; S11, equivalent DOA calculation is carried out according to the phase difference; and S12, a two-dimensional DOA of the OFDM signals received before and after first and second rotation of the antenna array in a plane composed of the signal direction and the antenna array is calculated according to the equivalent DOA and the rotation angles.

Description

technical field [0001] The invention relates to the field of array signal processing, in particular to an antenna array signal processing method and device. Background technique [0002] In recent years, wireless perception theory and technology based on antenna array technology have made major breakthroughs, and have been applied in many fields such as equipment positioning, human body tracking, and human-computer interaction. Key to these applications is antenna array signal processing. In particular, angle-of-arrival estimation is a fundamental technique for applications such as precise indoor positioning, wireless secure communication, wireless coverage control, and passive human-computer interaction. However, angle of arrival estimation is still not applicable to commercial wireless devices. In principle, the more antennas the array contains, the higher the accuracy of the angle of arrival measurement. However, most commercial devices currently have only a small numb...

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Application Information

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IPC IPC(8): G01S3/48
CPCG01S3/48
Inventor 钱堃吴陈沭杨铮刘云浩
Owner TSINGHUA UNIV
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