电波科学学报2012，Vol.27Issue(1)：134-140,7.
基于总体最小二乘的核四极矩共振参数估计
The estimation of NQR parameters based on total least squares
摘要
Abstract
Nuclear quadrupole resonance（NQR） is a solid-state radio frequency（RF） spectroscopic technique,allowing the detection of many high explosives.Unfortunately,NQR signals are inherently weak and vulnerable both to the thermal noise of the coil and any external radio frequency interference（RFI）,the practical use of NQR is restricted by the low signal-to-noise ratio（SNR）.On the basis of the investigation of the characteristic of the free induction decay（FID） signal,the linear prediction estimator based on the total least squares is applied to estimate the parameters of the NQR.The effectiveness of this algorithm is demonstrated with the results of both simulated data and experimental data.关键词
核四极矩共振/自由感应衰减/总体最小二乘Key words
nuclear quadrupole resonance(NQR)/free induction decay/total least squares分类
信息技术与安全科学引用本文复制引用
朱凯然,何学辉,郑小保,苏涛..基于总体最小二乘的核四极矩共振参数估计[J].电波科学学报,2012,27(1):134-140,7.基金项目
国家自然科学基金青年科学基金 （）
中央高校基本科研业务费专项资金 （）
陕西省“13115”科技创新工程项目 （）
