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Quantitative characterization method of random radiation array element arrangement in microwave staring correlative imaging system

A technology of correlative imaging and microwave staring, which is applied in the direction of radio wave reflection/re-radiation, radio wave measurement system, and utilization of re-radiation, etc., to achieve the effect of high-resolution imaging and high-resolution imaging

Active Publication Date: 2017-05-03
UNIV OF SCI & TECH OF CHINA
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Problems solved by technology

However, there is no related scheme in the prior art that can quantitatively characterize the amount of randomness in the spatial arrangement of radiating array elements

Method used

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  • Quantitative characterization method of random radiation array element arrangement in microwave staring correlative imaging system
  • Quantitative characterization method of random radiation array element arrangement in microwave staring correlative imaging system
  • Quantitative characterization method of random radiation array element arrangement in microwave staring correlative imaging system

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Embodiment

[0051] figure 1 It is a flowchart of a quantitative characterization method for a random radiation array element arrangement of a microwave staring correlation imaging system provided by an embodiment of the present invention. like figure 1 As shown, the method mainly includes the following steps:

[0052] Step 11. According to the position coordinates of the array elements, calculate the modulus length and phase of the relative position vectors of any two different array elements among all the array elements, and obtain the modulus length set and the phase set of the relative position vectors.

[0053] Specifically, the acquisition of the modulus length set and phase set of the relative position vector includes:

[0054] Let the array element antenna position coordinate set be P={(x i ,y i )|i=1,...,N}, N is the number of element antennas;

[0055] Calculate the set of relative position vectors of any two different array elements among all array elements:

[0056]

[0...

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Abstract

The invention discloses a random radiation array element arrangement quantitative characterization method of a microwave staring correlated imaging system. The method comprises the following step: describing the randomness of array element arrangement by virtue of the uniformity of mold lengths and phase positions of relative position vectors of array elements in a value range. Because the more random the space arrangement of a radiation array element is, the larger the array element distribution entropy is, the space arrangement randomness of the array elements can be effectively subjected to quantitative characterization; and moreover, the maximum array element distribution entropy is taken as a principle, and an optimal array element space arrangement can be obtained by adopting an optimization algorithm so as to ensure that high resolution imaging can be achieved.

Description

technical field [0001] The invention relates to the technical field of radiation source design, in particular to a quantitative characterization method for random radiation array element arrangement of a microwave staring correlation imaging system. Background technique [0002] Microwave staring-associated imaging refers to the use of radar located on a stationary platform to image a fixed area, which can achieve continuous staring observation and imaging of a specific area. Traditional staring imaging, that is, real-aperture imaging, its angular resolution is limited by the aperture of the actual antenna array, which limits its practical application. [0003] The high-resolution microwave staring correlation imaging system based on the space-time two-dimensional random radiation field interacts with the target in the fixed staring area by constructing the space-time two-dimensional randomly changing radiation field, and performs information processing through the received ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/89
CPCG01S13/89
Inventor 王东进孟青泉郭圆月陆广华刘波田超
Owner UNIV OF SCI & TECH OF CHINA
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