Steady waveform optimizing method for MIMO radar in clutter background

A waveform optimization and clutter technology, applied in the field of signal processing, can solve problems such as uncertainty

Active Publication Date: 2015-07-29
DALIAN UNIV
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  • Abstract
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Problems solved by technology

It should be noted that there are inevitably estimation errors in parameter estimation in actual engineering, so these parameters are uncertain

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  • Steady waveform optimizing method for MIMO radar in clutter background
  • Steady waveform optimizing method for MIMO radar in clutter background
  • Steady waveform optimizing method for MIMO radar in clutter background

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Embodiment Construction

[0086] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0087] Such as figure 1 As shown, the MIMO radar robust waveform optimization method under the clutter environment of the present invention comprises the following steps:

[0088] 1. Establish a robust waveform optimization problem model

[0089] 1) Construct MIMO radar signal model

[0090] Suppose the MIMO radar receives the signal as:

[0091] Y = Σ k = 1 K β k a ( θ k ) v T ( θ k ) S + ∫ - π π ρ ...

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Abstract

The invention provides a steady waveform optimizing method for an MIMO radar in a clutter background, and relates to the field of signal handling. The method comprises the steps of building an MIMO radar receiving signal model under the clutter background; deducing CRB with parameters to be estimated based on the model; estimating non-determination convex set explicit included waveform optimizing problem according to the initial parameters, and building a steady waveform optimizing model, wherein the minimum and maximum problems are the complex nonlinear problems related to optimization variable. According to the method, the iterating method is carried out to solve the problem; each step of iterating is converted into SDP problem, so that the problem can be efficiently solved; the proposed iterating algorithm is utilized to optimize a waveform covariance matrix; therefore, the parameter estimation performance under the worst condition in the clutter background can be improved; compared with the non-related waveform and non-steady methods, the method is high in steady performance and is close to the engineering application.

Description

technical field [0001] The invention belongs to the field of signal processing, and further relates to a method for robust waveform optimization of MIMO radar in a clutter environment in the technical field of waveform optimization. Background technique [0002] In recent years, multiple-input multiple-output (MIMO) technology has attracted extensive attention and research in the fields of communication and radar, and waveform optimization is an important research topic of MIMO radar. According to the different signal models that need to be optimized in the waveform optimization problem, the waveform optimization methods can be divided into the following two categories: (1) Optimizing the transmitting waveform; (2) Jointly optimizing the transmitting waveform and the receiving right. For the former, designers improve system performance by optimizing the waveform covariance matrix or radar ambiguity functions. For the latter, the comprehensive performance of MIMO radar is im...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/02
CPCG01S7/02
Inventor 王洪雁裴炳南裴腾达
Owner DALIAN UNIV
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