A Spectrum Stabilization Method for UAV Radiation Measurement
A radiation measurement and unmanned aerial vehicle technology, applied in the field of unmanned aerial vehicles, can solve the problems of increasing the amount of calculation, increasing the complexity of the system, affecting the stabilization time and accuracy of the spectrum, etc.
Active Publication Date: 2021-09-14
CHENGDU UNIVERSITY OF TECHNOLOGY
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Problems solved by technology
The introduced source will also be affected by electronics and respond to the energy spectrum of the relevant characteristic area, which needs to be deducted by software, which increases the complexity of the system
"Characteristic peak" spectrum stabilization generally uses multiple smoothing and filtering of the spectral lines, which increases the amount of calculation and affects the stabilization time and accuracy of the spectrum
In short, these methods have some shortcomings
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[0052] 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. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0053] refer to figure 1 ,Such as figure 1 As shown, a UAV radiation measurement stabilization method includes the following steps:
[0054] S1, segment the measured spectral line from the high-energy segment to the low-energy segment, and preprocess the data;
[0055] S2, calculate the count change rate and peak-to-total ratio between adjacent segments, optimize the peak-to-total ratio threshold, and exclude false peaks;
[0056] S3, through three-point peak finding, clustering the rate of change of segmented counts or finding outliers to obtain peak segments;
[0057] S4, obtain the charact...
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The invention discloses a method for stabilizing the radiation measurement spectrum of an unmanned aerial vehicle. Count change rate, peak-to-total ratio, optimize the peak-to-total ratio threshold, and eliminate false peaks; S3, through three-point peak finding, cluster the segmented count change rate or find out abnormal values, and obtain peak segments; S4, in doubt It is to obtain the characteristic value of the characteristic peak in the peak segment, and to verify the GMM peak shape estimation; S5, based on the 40K peak ratio system, the software quickly stabilizes the spectrum. The spectrum stabilizing method of the present invention does not need to add a characteristic source, does not need to smooth the original spectral line multiple times, but directly calculates, and realizes fast and stable spectrum at startup.
Description
technical field [0001] The invention relates to unmanned aerial vehicle technology, in particular to a method for stabilizing radiation measurements of unmanned aerial vehicles based on backscattering peaks and 40K characteristic peaks. Background technique [0002] At present, UAV (Unmanned Aerial Vehicle) is an unmanned aerial vehicle controlled by radio remote control equipment or its own program control device. It has the characteristics of wide application, low cost, no risk of casualties, and good maneuverability. played an important role in society. In order to adapt to the fast, flexible and efficient characteristics of UAVs, the detectors used for UAV radiation measurement are generally composed of multiple light-weight and small-sized detectors to form a detection array. Due to the relatively low count rate of a single crystal and the influence of factors such as the temperature and packaging of the electronic system, "spectral drift" will occur in multiple detect...
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IPC IPC(8): G01T1/40
CPCG01T1/40
Inventor 杨小峰曾国强顾民罗明涛
Owner CHENGDU UNIVERSITY OF TECHNOLOGY