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ADBF receiving processing method based on phased array MIMO

A processing method, phased array technology, applied in the field of radar, can solve problems such as large amount of computation

Pending Publication Date: 2022-01-28
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For a large-scale phased array MIMO radar system, when it performs overall ADBF on the received signal, the signal processing process is carried out at the level of the virtual array, and the amount of calculation is relatively large.

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  • ADBF receiving processing method based on phased array MIMO
  • ADBF receiving processing method based on phased array MIMO
  • ADBF receiving processing method based on phased array MIMO

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Embodiment Construction

[0059] The present invention will be described in further detail below in conjunction with specific examples, but the embodiments of the present invention are not limited thereto.

[0060] Such as figure 1 As shown, a receiving ADBF processing method based on phased array MIMO provided by the present invention is applied to a MIMO radar system, and the method includes:

[0061] Step 1: Obtain the target reflection signals received by multiple receiving sub-arrays after the transmitting sub-arrays of the MIMO radar system transmit signals;

[0062] Wherein, the MIMO radar system includes: M transmitting sub-arrays, N receiving sub-arrays, the transmitting sub-arrays and receiving sub-arrays are not overlapped, each sub-array has L array elements; each transmitting sub-array Transmit the same signal, transmit mutually orthogonal signals between the sub-arrays, the radar signal received by the N receiving sub-arrays is x(t), and the target reflected signal includes interference ...

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Abstract

The invention provides a receiving ADBF processing method based on phased array MIMO. The receiving ADBF processing method comprises the following steps of carrying out receiving ADBF processing on a target reflection signal of each receiving sub-array; performing matched filtering on the processed target reflection signal by using a plurality of matched filters; and performing equivalent emission DBF processing on each group of matched and filtered target reflection signals to obtain processed target reflection signals. According to the method, ADBF is directly carried out on a received signal, B beams are considered to be formed, and the calculation amount at the moment is B*O(N3); then matched filtering is carried out, finally equivalent emission DBF is carried out, and the required operand is MB; therefore, the total operand of equivalent emission DBF processing after ADBF receiving is MB+NBNMF+B*O(N3), and the operand is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of radar, and in particular relates to a receiving ADBF processing method based on phased array MIMO. Background technique [0002] With the development of technology, large-aperture array antennas are being used more and more widely in the satellite and radar fields. In a large phased array antenna, there are generally hundreds or even thousands of antenna elements. ADBF technology uses digital technology to control the array weight coefficient. For a large phased array antenna, if it is to realize fully adaptive digital beamforming, it is necessary to process the received signal of each array element separately, and the system design is complicated. Both the degree and the hardware cost are very large. [0003] When the overall ADBF is performed on the received signal conventionally, the signal processing process is carried out on the level of the virtual array, and the calculation load is relatively lar...

Claims

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Application Information

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IPC IPC(8): G01S7/292G01S7/35
CPCG01S7/292G01S7/354
Inventor 陈伯孝叶倾知王湖升郎思呈
Owner XIDIAN UNIV