CAJ | 학술논문

电离层垂直探测方法获得的频高图是电离层观测中历史最为悠久的资料,利用现代微电子和计算机技术对大量历史胶片频高图的数字化转换、分析和保存,已成为拯救保护和利用这些珍贵历史资料的十分紧迫和重要的工作.本文采用数字和图像处理等技术对胶片频高图像进行数字化、校正、修复和格式转换,并开发出胶片频高图分析与转换程序,结合常用的SAO Explorer软件对武汉地区的胶片频高图进行了实例的分析.结果表明,该方法具有较好的可靠性和通用性,对大量历史频高图的数字化转换和分析具有实用性.
전리층수직탐측방법획득적빈고도시전리층관측중역사최위유구적자료,이용현대미전자화계산궤기술대대량역사효편빈고도적수자화전환、분석화보존,이성위증구보호화이용저사진귀역사자료적십분긴박화중요적공작.본문채용수자화도상처리등기술대효편빈고도상진행수자화、교정、수복화격식전환,병개발출효편빈고도분석여전환정서,결합상용적SAO Explorer연건대무한지구적효편빈고도진행료실례적분석.결과표명,해방법구유교호적가고성화통용성,대대량역사빈고도적수자화전환화분석구유실용성.
The ionograms acquired with the ionospheric vertical sounding method is the oldest data in the history of ionospheric research.Using of modern microelectronics and computer technology to digitalize,analyse and preserve the huge amount of historical film ionogram has become more and more important and urgent.There are more than thirty years data of ionorams in film format at the Wuhan station.It is a very essential work to preserve,protect and utilize these valuable historical data.This paper introduces the progress of our project in using digital image processing technologies to digitalize,correct and repair of film ionograms and convert them in an exchangeable format.An analysis and conversion software has been developed for the film ionogram analysis,and then it utilizes the SAO Explorer program to scale Wuhan film ionograrm Some examples have been presented to show that our method is reliable and the developed software is user friendly.Our work provides a positive solution in digitalization and analysis of huge amount of historical film ionograms.With the on-going of the project,huge amount of ionospheric parameters and electron density data will be available to the ionospheric community.