现代防御技术2011，Vol.39Issue(3)：86-90,5.DOI:10.3969/j.issn.1009-086x.2011.03.019
基于PXI总线的MLS模拟器扫描角度精确测量
Precise Measurement of the MLS Simulator' s Scan Angle Based on PXI
张强1
作者信息
- 1. 航天科工防御技术研究试验中心,北京,100854
- 折叠
摘要
Abstract
The PXI technology is used to measure the MLS simulator' s scanning angle precisely. After the digitalization of the intermediate frequency(IF) signal, MLS simulator' s output signal is interpolated, filtered, etc. , so the time distinguishing ability of the scanning beam can be improved and the fiducial level' s timing error caused by linearization can be reduced. The multiple-fiducial level ( MFL) algorithm is proposed to be used in the measurement of the scanning; angle, the precision is improved in whole by weighting the measurement results, and the corresponding weighting coefficients ' calculation process is also given in detail. The experiment results show that the interpolation and filtering process can reduce the calculation discrepancy of the scanning angle caused by linearization , and that the noise ' s influence on the measurement results can be mitigated effectively by applying the MFL algorithm.关键词
总线拓展PCI技术/微波着陆系统模拟器/线性化/扫描波束Key words
PCI extensions for instrumentation ( PXI) / microwave landing system ( MLS) simulator/linearization / scanning beam分类
信息技术与安全科学引用本文复制引用
张强..基于PXI总线的MLS模拟器扫描角度精确测量[J].现代防御技术,2011,39(3):86-90,5.
