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Centralized MIMO radar radio frequency stealth multi-target tracking wave beam pointing method

A technology of multi-target tracking and beam pointing, which is applied in the field of multi-target tracking beam pointing in centralized MIMO radar radio frequency stealth, and can solve problems that do not involve MIMO radar multi-target tracking beam pointing methods

Inactive Publication Date: 2015-12-16
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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Problems solved by technology

[0004] However, the above research does not involve the multi-target tracking beam pointing method for MIMO radar radio frequency stealth

Method used

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  • Centralized MIMO radar radio frequency stealth multi-target tracking wave beam pointing method

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Embodiment Construction

[0130] For the centralized MIMO radar of any array, through the optimization of this technical solution, the radio frequency stealth performance of the radar can be improved while ensuring the radar detection performance.

[0131] In order to simplify the simulation, it is assumed that each target has the same distance from the radar, that is, R n =R, n=1,2,...,N. The radar antenna array takes the uniform linear array as an example. The total number of elements of the MIMO radar array is M=64, and the optional set of the number of sub-arrays K is {1,2,4,8,16,32,64}, and the total peak transmit power P t The value range of is [1,1000]W.

[0132] Reference (Burns, P.D.; Blair, W.D., "Optimal phased array radar beam pointing for MTT," Aerospace Conference, 2004. Proceedings. 2004 IEEE, vol.3, no., pp., 1858 Vol.3, 6-13 March 2004), create a cluster with 2 targets (target collection). The distance between each target is half of the 3dB beamwidth of the gain pattern obtained wh...

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Abstract

The invention provides a centralized MIMO radar radio frequency stealth multi-target tracking wave beam pointing method, and belongs to the technical field of communication radar. Assuming that an interception receiver obeys uniform distribution in a position uncertainty region of the interception receiver, a target function is established with minimization of average signal-to-noise ratio of radar signals received by the interception receiver acting as the target, and the positions of targets are modeled as random quantity so that that probability that echo signal-to-noise ratio of all the targets is great than the preset value is ensured not to be less than a certain value. With application of parameters obtained by optimization of an optimization model, average signal-to-noise ratio of the radar signals received by the interception receiver is enabled to be minimized under the condition of guaranteeing radar echo signal-to-noise ratio performance so that the probability that radar is detected by the interception receiver can be reduced as far as possible.

Description

technical field [0001] The invention belongs to the technical field of communication radars, and in particular relates to a multi-target tracking beam pointing method for centralized MIMO radar radio frequency stealth. Background technique [0002] MIMO radar is a radar system in which multiple transmitting antennas transmit different waveforms independently, and multiple antennas are used to receive and detect at the receiving end. For the centralized MIMO radar, it transmits an orthogonal waveform, which can form a wide beam in the airspace, realize a search for a larger airspace at one time, and have more flexible signal processing methods, such as detecting weak targets by suppressing strong clutter, More powerful anti-interference ability, effectively increasing the virtual aperture of the antenna and the ability to detect low-speed targets, etc. At the same time, the centralized MIMO radar can effectively reduce the power density at the reconnaissance equipment, makin...

Claims

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Application Information

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IPC IPC(8): G01S13/66
CPCG01S13/66G01S2013/0281
Inventor 程婷武俊青杨少委张洁张宇轩
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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