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Method for designing transmitting direction diagram of airborne radar

A technology of emission pattern and airborne radar, applied in radio wave measurement systems, instruments, etc., can solve the problems of reducing the signal-to-noise ratio of the target echo signal, low sag, unable to guarantee the clutter area, etc., to improve the clutter suppression performance, reduced workload, and improved clutter suppression

Active Publication Date: 2015-07-29
XIDIAN UNIV
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Problems solved by technology

At the same time, since the transmitted signal S of the airborne radar is a constant modulus matrix, the actual correlation matrix of the transmitted signal S can only be approximated to the optimal correlation matrix R, which cannot guarantee a sufficiently low sag in the clutter area, which may reduce the target return. signal to noise ratio

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  • Method for designing transmitting direction diagram of airborne radar
  • Method for designing transmitting direction diagram of airborne radar
  • Method for designing transmitting direction diagram of airborne radar

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Embodiment Construction

[0043] The present invention will be further described below in conjunction with accompanying drawing:

[0044] An embodiment of the present invention proposes a method for designing an airborne radar emission pattern. The airborne radar can be selected from radars of various standards, for example, the airborne radar is a phased array radar. The array elements of the airborne radar are equidistantly distributed, the number of array elements of the airborne radar is N, the distance between adjacent array elements of the airborne radar is d, and the working wavelength of the airborne radar is λ.

[0045] refer to figure 1 , is a schematic flowchart of a method for designing an airborne radar transmission pattern according to an embodiment of the present invention. The airborne radar emission pattern design method specifically includes the following steps:

[0046] S1: Extract the azimuth angle θ of the target from the echo signal received by the airborne radar at the last mo...

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Abstract

The invention belongs to the technical field of airborne radar transmitting end clutter suppression, and discloses a method for designing a transmitting direction diagram of an airborne radar. The method for designing the transmitting direction diagram of the airborne radar comprises the steps of constructing steering vector data according to echo signals received by the airborne radar at the last moment; calculating response of a target and response of clutters according to the steering vector data, and acquiring a calculation formula for the average power of target signals and the average power of clutter signals; constructing a clutter-to-signal ratio; establishing a corresponding convex optimization mathematical model by taking the minimum clutter-to-signal ratio as a cost function; acquiring an optimal value of a correlation matrix of transmission signals; and acquiring a transmitting direction diagram of the airborne radar.

Description

technical field [0001] The invention belongs to the technical field of clutter suppression at an airborne radar transmitting end, and relates to a design method for an airborne radar emission pattern, in particular to a design method for an airborne radar emission pattern for improving the clutter suppression capability. Background technique [0002] The widespread application of digital components in radar systems has produced digital array radars, and each array element of digital array radars can emit different signals. The concept of MIMO in the field of simultaneous communication [Rabideau D.J.and Parker P..Ubiquitous MIMO Multifunction Digital Array Radar[C].Conference Record of the37th Asilomar Conference on Signals,Systems and Computers,2003,vol.1,pp.1057-1064] And technology and the application of SIAR in radar make the digital array radar come into play. MIMO radars can be divided into distributed MIMO radars and centralized MIMO radars according to the distance b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/02G01S7/36G01S7/41
CPCG01S7/023G01S7/36G01S7/41
Inventor 刘宏伟纠博施君南王英华戴奉周
Owner XIDIAN UNIV
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