Distributed MIMO radar transmitting signal optimization design method based on radio frequency stealth

A transmission signal, radio frequency stealth technology, applied in the field of distributed multi-input multi-output radar transmission signal optimization design, can solve the problem of reducing the total transmission power

Active Publication Date: 2018-05-15
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0006] Purpose of the invention: Aiming at the simultaneous existence of environmental clutter and colored noise in practical applications, a distributed MIMO radar transmission signal based on

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  • Distributed MIMO radar transmitting signal optimization design method based on radio frequency stealth
  • Distributed MIMO radar transmitting signal optimization design method based on radio frequency stealth
  • Distributed MIMO radar transmitting signal optimization design method based on radio frequency stealth

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Embodiment Construction

[0054] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0055] The present invention proposes a distributed MIMO radar transmission signal optimization design method based on radio frequency stealth. The main task accomplished by this method is to obtain target , the environmental clutter reflection matrix and the eigenvalues ​​of the colored noise matrix, with the goal of minimizing the total power of the transmitted signal of the distributed MIMO radar system, under the condition of satisfying a certain target tracking performance, the transmission of the distributed MIMO radar system The signal is adaptively optimized and designed.

[0056] like figure 1 Shown, a kind of distributed MIMO radar transmitting signal optimization design method based on radio frequency stealth of the present invention may further comprise the steps:

[0057] (1) Determine the reflection matrix of...

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Abstract

The invention discloses a distributed MIMO radar transmitting signal optimization design method based on radio frequency stealth. The method comprises the steps of acquiring a reflection matrix H of atarget relative to a radar system, a reflection matrix C of an environment clutter relative to the radar system, and a colored noise matrix N at a radar receiver; establishing a distributed MIMO radar signal optimization design model based on radio frequency stealth; determining an optimal lagrangian multiplier (img file = 'DDA 0001474167540000011.TIF 'wi='67 'he='55'), substituting the (img file= 'DDA 0001474167540000012.TIF 'wi='45 'he='56') into the KKT necessary condition to obtain an optimal emission signal (img file = 'DDA 0001474167540000013.TIF 'wi='158 'he='79') of a distributed MIMO radar, and obtaining a distributed MIMO radar transmitting signal with the radio frequency stealth performance. According to the distributed MIMO radar transmitting signal optimization design methodbased on radio frequency stealth, the total transmitting power of the distributed MIMO radar system is reduced from the practical aspect. Meanwhile, the radio frequency stealth performance of the distributed MIMO radar system is improved.

Description

technical field [0001] The present invention relates to radar signal optimization design technology, in particular to a distributed multiple-input multiple-output (Multiple-Input Multiple-Output, MIMO) radar transmission signal optimization design method based on radio frequency stealth. Background technique [0002] Distributed MIMO radar system is a new active detection technology, which has aroused great interest of many scholars and scientific research institutions at home and abroad in recent years. In the distributed MIMO radar system, the distance between each array element is large, and the target can be observed from different angles, and a large space diversity gain can be obtained, which can effectively reduce the radar cross section (Radar Cross Section, RCS) scintillation of the target on the system detection performance and tracking. It has the advantages of higher spatial resolution, better target detection performance and more flexible resource management des...

Claims

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Application Information

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IPC IPC(8): G01S7/282
CPCG01S7/282
Inventor 时晨光汪飞李海林周建江夏伟杰
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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