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Method for designing MIMO radar waveform and transmitting antenna array

A technology for transmitting antennas and radar waveforms, which is applied in the radar field and can solve the problems of reducing the distance sidelobe and angle sidelobe of centralized MIMO radar waveforms, and the reduction of distance sidelobes and angle sidelobes of centralized MIMO radar waveforms.

Active Publication Date: 2014-10-01
XIDIAN UNIV
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Problems solved by technology

In practice, what we hope is that the designed MIMO radar waveform has the desired emission pattern, and can reduce the range sidelobe and angle sidelobe of the centralized MIMO radar waveform, but the above method cannot meet this requirement
Although the design of MIMO radar waveforms can solve this problem by approximating the desired transmission pattern and minimizing the range sidelobe and angle sidelobe levels of the centralized MIMO radar waveform, however, the MIMO radar waveform obtained by this method is , the approximation effect of the desired pattern still needs to be further improved, and the range sidelobe and angle sidelobe of the centralized MIMO radar waveform need to be further reduced

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  • Method for designing MIMO radar waveform and transmitting antenna array
  • Method for designing MIMO radar waveform and transmitting antenna array
  • Method for designing MIMO radar waveform and transmitting antenna array

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Embodiment Construction

[0074] refer to figure 1 , illustrate a kind of method of designing MIMO radar wave form and transmitting antenna array of the present invention, the realization steps are as follows:

[0075] Step 1, determine the number N of antennas of the transmit antenna array of the centralized MIMO radar t and the number of receiving antennas N r ; and determine the antenna aperture D=χ×(N t -1), χ is the sparseness of the set transmit array antenna, and × represents the product.

[0076] According to the actual centralized MIMO radar system, the number of transmitting antennas N can be obtained t and the number of receiving antennas N r . This method requires that the receiving antenna array is a uniform linear array with a half-wave spacing; for the transmitting antenna array, it is also required to be a linear array, and the array element spacing can only be obtained after being optimized by the algorithm provided by the present invention.

[0077] Step 2, set the number of cen...

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Abstract

The invention discloses a method for designing an MIMO radar waveform and a transmitting antenna array, and relates to the technical field of radars. The method includes the steps that (1), the number Nt of transmitting antennas, the number Nr of receiving antennas, and the antenna aperture D of the transmitting antenna array of a centralized MIMO radar device are set; (2), the number Nt of the waveform and the length Ns of a code element of the centralized MIMO radar device are set; (3), the normalized detection angle frequency and the normalized suppression angle frequency of the centralized MIMO radar device are set; (4), an expected transmitting direction map is determined; (5), the objective function and constraint conditions of the centralized MIMO radar waveform and the transmitting antenna array are built; (6), the optimized centralized MIMO radar waveform S and the array element spacing vector Beta of the transmitting antenna array are solved through an optimization algorithm. The distance sidelobe and the angle sidelobe of the centralized MIMO radar waveform can be reduced, and the expected transmitting direction map can be approached better.

Description

technical field [0001] The invention belongs to the field of radar technology, in particular to a method for designing MIMO radar waveforms and transmitting antenna arrays, which are used for designing desired transmitting patterns and reducing distance sidelobes and angle sidelobes of centralized MIMO radar waveforms. Background technique [0002] Multiple-input multiple-output (MIMO) radar is a new active detection technology and has become a research hotspot in the field of radar technology. According to the distance between the transmitting antenna and the receiving antenna, MIMO radar can be divided into two types: distributed MIMO radar and centralized MIMO radar. For the centralized MIMO radar, its characteristic is that the distance between the transmitting and receiving antennas or array elements is relatively small. Compared with phased array radar, centralized MIMO radar has the ability to freely design the signal waveform of each array element, so it has higher ...

Claims

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Application Information

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IPC IPC(8): G01S7/02G01S7/282
CPCG01S7/2813G01S7/282
Inventor 刘宏伟周生华徐磊磊臧会凯白雪茹
Owner XIDIAN UNIV
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