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Distributed MIMO radar power and bandwidth joint optimization method based on target positioning

A target positioning and joint optimization technology, applied in design optimization/simulation, radio wave reflection/re-radiation, special data processing applications, etc., to achieve the effect of minimizing the total transmission power

Pending Publication Date: 2021-08-24
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0004] However, after careful study, scholars have only given the allocation algorithm when the power and bandwidth are greater than zero, but in other cases, such as: when the power and bandwidth have upper and lower bounds, whether the proposed optimization algorithm is still valid is worthy of attention. in-depth thinking and inquiry

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  • Distributed MIMO radar power and bandwidth joint optimization method based on target positioning
  • Distributed MIMO radar power and bandwidth joint optimization method based on target positioning
  • Distributed MIMO radar power and bandwidth joint optimization method based on target positioning

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Embodiment Construction

[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0030] The present invention proposes a distributed MIMO radar power and bandwidth joint optimization method based on target positioning, such as figure 1 As shown, it specifically includes the following steps:

[0031] Step 1: Construct the target localization scenario of the distributed MIMO radar system.

[0032] Consider a distributed MIMO radar system consisting of M radar transmitters and N radar receivers. The radar transmitters transmit incoherent orthogonal signals, and the radar receivers can simultaneously receive the signals emitted by the M radar transmitters reflected by the target. signal, and process it to obtain the location information of the target.

[0033] Step 2: Use the trace of the estimated CRLB of the target location as a measure of target localization performance.

[0034] The trace of the target localized CRLB can be expressed a...

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Abstract

The invention discloses a distributed MIMO radar power and bandwidth joint optimization method based on target positioning, and the method comprises the steps: firstly constructing a target positioning scene of a distributed MIMO radar system; secondly, adopting CRLB of target position estimation as a target positioning performance index; then, taking minimization of the total transmitting power of the distributed MIMO radar system as an optimization target, and taking meeting of target positioning performance and distributed MIMO radar system resources as constraint conditions, establishing a distributed MIMO radar power and bandwidth joint optimization model based on target positioning; and finally, solving the constructed optimization model by using an alternating multiplier method. According to the method, the requirement of the distributed MIMO radar system for the target positioning precision is met, and the total transmitting power of the distributed MIMO radar system can be minimized under the condition of any system resource constraint.

Description

technical field [0001] The invention belongs to the technical field of radar signal processing, and specifically proposes a distributed MIMO radar power and bandwidth joint optimization method based on target positioning. Background technique [0002] Distributed Multiple-Input Multiple-Output (MIMO) radar system uses multiple radar transmitting antennas to transmit specific waveform signals, and simultaneously uses multiple radar receiving antennas to process the echoes and estimate the state of the target. Compared with the traditional radar system, it has the advantages of beam diversity and space diversity, and has become one of the hot spots in the research of new system radar in the past ten years. Theoretically, the greater the transmission power and effective bandwidth of the distributed MIMO radar system, the higher the accuracy of parameter estimation of the target. However, in practical applications, it is necessary to optimize the allocation of power and bandwid...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G01S13/87G01S7/40
CPCG06F30/20G01S7/40G01S13/87
Inventor 时晨光张巍巍汪飞周建江
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS