面向多旋翼飞行器的γ谱仪关键技术分析.docx

Abstract
As military nuclear weapons, nuclear materials and technology diffusion is ing more and more serious, and the typicalsuddenof the radiation accident and radiation terrorist attacks,they are great threat to social security and national politics and economic, Multi-rotor aircraft with nuclear detection equipment in the application of nuclear environment had gradually highlighted its advantages and immeasurable effect. This paper focused on the problems of radiation detection, recognition and treatment, carried out a series ofresearch work aboutkey technology of multi-rotor aircraft with gamma spectrometer bines the theory and practice. Main content includes the following aspects:
On the foundation of the research about theories and resultsof the digital spectrometer, we can concludethe main factors affecting the performance of the gamma spectrometer of the multi-rotorand the key technical problems need to be multiple-rotor aircraft platform, compare and analysis the traditional nuclear spectrometer digital processing method, choose synthesis method, parison method, and average method as the platform of gamma spectrometer digital processing method, lay the foundation for the analysis of energy spectrum.
Focused on thedefectthat traditional line smoothing method will cause distortion of spectrumwhenthe parameter of the filter is improper or the frequency ofsmoothing is too much, this paper puts forward a recursive least squares method of spectral smoothing. Take advantage of the principle of adaptive filter, using the fast kalman recursive least squares method, and through the forward and backward predictor update the filter coefficient, realizing the processing of energy spectrum data the paredthis method with polynomial least squares method and least mean square algorithm in qualitative analysis and the results demonstrate that this method can reduce the noise in the spectrum, and can keep the characteristics of spectral.
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