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MIMO radar system and phase synchronization method of the same at dynamic target end

A dynamic target, phase synchronization technology, applied in the field of radar, can solve problems such as slow convergence speed

Inactive Publication Date: 2016-02-24
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a MIMO radar system and its phase synchronization method at the dynamic target end, so as to solve the defect of slow convergence speed of the traditional phase synchronization method

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  • MIMO radar system and phase synchronization method of the same at dynamic target end

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Embodiment Construction

[0063] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0064] The present invention can realize the basic synchronization of the arrival signal phase at the dynamic target end within two time slots by transmitting signals twice, once estimating the frequency parameter and phase parameter, and once rebuilding the frequency parameter and phase parameter. figure 2 Shown is a schematic diagram of the working principle of the MIMO radar system provided by the present invention. The phase synchronization method of the radar system at the dynamic target end is as follows: figure 1 As shown, including the following processes:

[0065] Step A: At the beginning of the first time slot, the first radar array transmits a synchronous control signal; at the end of the first time slot, the initial signal is reflecte...

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Abstract

The invention relates to the technical field of radars, particularly to an MIMO radar system and a phase synchronization method of the same at a dynamic target end. The phase synchronization method uses two time slots as a period to estimate frequency and phase parameters of a signal, utilizes estimation parameters to build new frequency and phase parameters, and a radar feedback array transmits a feedback signal to realize ideal phase synchronization of the dynamic target end. Compared with existing source end and receiving end phase synchronization technologies, the number of required time slots is greatly reduced when the number of radars is relatively large, the requirement of the proposed phase synchronization technology for a network topology structure of a radar system is not high, multiple times of iteration is not needed to achieve an effect of state convergency, the convergence rate is improved, power consumption of a network is greatly reduced, and the service life of the network is prolonged.

Description

technical field [0001] The invention relates to the technical field of radar, in particular to a phase synchronization method and system in MIMO radar. Background technique [0002] Radar technology, especially MIMO radar technology has been widely used in recent decades. There is also increasing research on phase synchronization in MIMO radars. Whether the phase is synchronized is directly related to the combined energy value of the signal. When considering the dynamic target tracking function in the radar, the greater the energy of the received signal at the receiving end, the more beneficial it is for us to extract useful signals, so as to estimate the parameters of the dynamic target. [0003] The existing research on phase synchronization in MIMO radar system includes source phase synchronization technology and receiver phase synchronization technology. For a distributed MIMO radar system, the source phase synchronization process takes up more time slots. For M radar...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L7/033G01S13/87G01S13/02G01S7/40
CPCG01S7/4004G01S13/02G01S13/87H04L7/033
Inventor 谢宁张力张莉王晖林晓辉
Owner SHENZHEN UNIV