Cylindrical-array-based centralized MIMO (multiple input multiple output) radar waveform optimization method

An optimization method and radar waveform technology, applied in radio wave measurement systems, instruments, etc., can solve the problems of less freedom of the transmitter and poor pattern effect, and achieve good autocorrelation side lobe level and cross-correlation level, good Emission pattern, the effect of multiple degrees of freedom

Active Publication Date: 2017-01-04
XIDIAN UNIV +1
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Problems solved by technology

[0003] However, the current research on conformal arrays is mainly research on conformal phased array radars, and the research contents mainly include conformal array array elements, adaptive beamforming, and conformal array airs

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  • Cylindrical-array-based centralized MIMO (multiple input multiple output) radar waveform optimization method
  • Cylindrical-array-based centralized MIMO (multiple input multiple output) radar waveform optimization method
  • Cylindrical-array-based centralized MIMO (multiple input multiple output) radar waveform optimization method

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Embodiment Construction

[0023] refer to figure 1 , is a flow chart of a centralized MIMO radar waveform optimization method based on a cylindrical array of the present invention; the centralized MIMO radar waveform optimization method based on a cylindrical array includes the following steps:

[0024] Step 1. Determine the cylindrical array centralized MIMO radar. The cylindrical array centralized MIMO radar integrates transceivers and includes N circles of array elements. The planes of each circle of array elements are parallel to each other. The radius of each circle of array elements is R, and each Circle elements contain N t array elements, the N t The array elements are both transmitting array elements and receiving array elements; the arc length between adjacent array elements in the plane where each circle of array elements is located is l 1 , and the distance between adjacent array elements in their planes is l 2 ; respectively determine the azimuth detection range of the cylindrical array...

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Abstract

The invention discloses a cylindrical-array-based centralized MIMO (multiple input multiple output) radar waveform optimization method, which mainly comprises the following steps: determining a cylindrical-array-based centralized MIMO radar, the cylindrical-array-based centralized MIMO radar integrating sending and receiving and comprising N circles of array elements and each circle of array elements comprising Nt array elements, and obtaining phase difference column vectors of the N circles of array elements relative to the antenna phase center of the cylindrical-array-based centralized MIMO radar and electric field intensity column vectors of the N circles of array elements respectively; further calculating guide vectors of the N circles of array elements; calculating a receiving beamforming weight of the centralized MIMO radar, and further calculating an optimal receiving beamforming weight of the centralized MIMO radar; recording expected sending directional diagrams, then arranging the expected sending directional diagrams to obtain column vectors of the expected sending directional diagrams according to an arrangement sequence of the phase difference column vectors, calculating a designing criterion of a waveform matrix S of the N circles of array elements of the centralized MIMO radar, and further calculating a final waveform matrix of the centralized MIMO radar.

Description

technical field [0001] The invention belongs to the technical field of radar waveform acquisition, in particular to a centralized MIMO radar waveform optimization method based on a cylindrical array, which is suitable for reducing the autocorrelation sidelobe level of signals in the same direction and the cross-correlation level in different directions, and approaching the desired Launch pattern. Background technique [0002] A conformal array antenna usually refers to a special array manifold whose array surface matches the shape of the carrier platform. Keep consistent, so that the beam scanning range of the conformal array antenna extends from the usual ±60° solid angle of the planar array antenna to half space, or even full space coverage, which significantly improves the field of view of the radar; in addition, the conformal array antenna can Fully conformal with high-speed flying carriers, such as fighter jets, missiles, satellites, etc., without damaging the shape de...

Claims

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Application Information

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IPC IPC(8): G01S7/02
CPCG01S7/02
Inventor 周生华刘宏伟徐磊磊张新勋臧会凯
Owner XIDIAN UNIV
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