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

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...

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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 radio frequency stealth is proposed, which reduces the total transmission power of the distributed MIMO radar system and improves its radio frequency stealth performance Optimal Design Method

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