Automatic scaling of F layer from ionograms. Issue 3 (21st June 2013)

• Record Type: Journal Article
• Authors: Chen, Ziwei; Wang, Shun; Zhang, Shunrong; Fang, Guangyou; Wang, Jinsong
• Is Part Of: Radio science. Volume 48:Issue 3(2013:Jun.)
• Page Start: 334
• Page End: 343
• Publication Date: 2013-06-21
• Subjects: ionosphere -- ionogram -- automatic scaling -- mode identification -- mathematical morphology -- graph theory; Radio meteorology -- Periodicals; Radio wave propagation -- Periodicals; 621.38405
• DOI: 10.1002/rds.20038
• Languages: English
• ISSNs: 0048-6604

Abstract

Abstract: [1] The correct automatic scaling of ionograms is one of the fundamental first steps to obtain ionospheric information. In this paper, new algorithms are proposed to scale F layer traces and separate ordinary ray and extraordinary ray traces from ionograms automatically. The method is mainly based on mathematical morphology, graph theory, and the echo characteristics of the ionosphere. Digital ionogram data from the Chinese Academy of Sciences Digital Ionosonde, installed at Dulan (36°17′N, 98°5′E), were used to demonstrate the data processing procedures. Key Points: An automatic ionogram scaling method is developed. This method is based on mathematical morphology and graph theory. It provides useful trace information for electron density profile inversion.