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Staggered MIMO radar array antenna construction method

A construction method and technology of radar arrays, applied to antennas, antennas, antenna arrays and other directions suitable for movable objects, can solve problems such as unsuitable wiring arrays

Inactive Publication Date: 2011-01-19
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0005] Aiming at the problem that MIMO radars of airborne platforms and spaceborne platforms are not suitable for wiring arrays in the "curved wing situation" and "limited array spacing", the present invention proposes a method based on the principle of phase center approximation (PCA) A method for constructing MIMO radar array antennas with staggered distribution, which can better solve the applicability problem in the above cases while retaining the simple characteristics of linear arrays that are easy to analyze and design

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  • Staggered MIMO radar array antenna construction method

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Embodiment Construction

[0175] Firstly, the parameter index of the system design is given: the load platform of the system is a UAV, and the geometric parameters of the effective area for installing the antenna (that is, the antenna array platform) are: the wingspan is 16 (m), and the lateral width of the body is 2(m), the longitudinal width of the wing is 1.2(m), the angle between the two wings and the body is θ=arctan(8)=82.875°; the number of transmitting array elements is 16, and the transmitting signal is an orthogonal signal, and The carrier wavelength is λ=0.06(m), and the maximum beam angle of the antenna is θ 0 = 45°; both the receiving antenna unit and the transmitting antenna unit are horn-shaped antennas, and have the same shape and size. d=0.3(m); satisfy both the "curved wing condition" and the "restricted formation spacing condition"; the priority selection principle is to reduce the jitter error.

[0176] Step 1. Initial setting of antenna related parameters

[0177] First, determin...

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Abstract

The invention discloses a staggered MIMO radar array antenna construction method, which is a construction method of a staggered double-end emission model and a staggered inside emission model based on the phase center approximation (PCA) principle. The staggered double-end emission model can obtain bigger array antenna apertures but introduce more jitter errors caused by airfoil jitter while the staggered inside emission model can reduce the array antenna apertures, but the introduced jitter errors can be obviously reduced. The models can be flexibly selected according to different system design requirements. The method better solves the applicability problems under the bent wing condition and the array interval restriction condition while maintaining the characteristics of easy analysis and design of the linear arrays.

Description

Technical field: [0001] The invention belongs to the technical field of radar, and in particular relates to the technical field of MIMO radar and radar array antenna. technical background: [0002] MIMO radar is a new system radar. Inspired by the multiple-input multiple-output (MIMO) communication idea, at the beginning of this century, some scholars extended MIMO technology to the radar field and proposed the concept of MIMO radar . The system radar has many advantages in signal detection, parameter estimation and spatial resolution, so it has become a research hotspot for theoretical and engineering researchers. [0003] Compared with traditional radar, MIMO radar makes more use of the resources of the transmitting array, and obtains waveform diversity gain by transmitting uncorrelated or partially correlated multi-waveforms; it can also be arranged by the large array element spacing of the transmitting and receiving antenna elements, so that The transmitted waves irrad...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/28H01Q21/00
Inventor 张晓玲解文成韦顺军
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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