Automatic Data Acquisition System and Reconstruction Algorithm for Computerized Ionospheric Tomography

作     者：Wu, Xiong-bin Xu, Ji-sheng Ma, Shu-ying Tian, Mao Yu, Shen-bing Yeh, K.C. Tsai, W.H. Lin, K.H. 

作者机构：Wuhan Univ Wuhan China 

出 版 物：《Wuhan University Journal of Natural Sciences》 (武汉大学学报（自然科学英文版）)

年 卷 期：1999年第4卷第2期

页      面：67-73页

核心收录：

学科分类：070802[理学-空间物理学] 07[理学] 0708[理学-地球物理学] 

基　　金：National Natural Science Foundation of China  (49584006) 

主　　题：ionosphere tomography data acquisition algorithm differential Doppler 

摘      要：The design and operation features of the automatic data acquisition system for the low latitude ionospheric tomography along the 120°E meridian are presented. The system automatically collects the differential Doppler phase data,and GPS satellite beacon signal is simultaneously collected to achieve time synchronization of all receivers in whole station chain. An improved reconstruction algorithm of computerized ionospheric tomography is also proposed, in which calculating of the integral phase constant and choosing of the initial guess are integrated in the procedure of reconstruction and evaluated by the reconstructed image. Both numerical simulation examples and reconstructed results from observed data show that the new algorithm works reasonably and effectively with ionospheric CT problems.