Title :
Parabolic equation method for Loran-C ASF prediction over irregular terrain
Author :
Dandan Wang ; Xiaoli Xi ; Yurong Pu ; Jiangfan Liu
Author_Institution :
Fac. of Autom. & Inf. Eng., Xi´an Univ. of Technol., Jinhua, China
Abstract :
The Parabolic Equation (PE) method is employed to solve the Loran-C additional secondary factors (ASFs) over irregular terrain. The method is based on split-step Fourier transform (SSFT) algorithm, and has been proven to be numerically efficient. The ASF results are compared to those of finite-difference time-domain (FDTD) method and integral equation (IE) method with very good agreement. The computational time of the PE method is several orders less than the other two. The memory requirement is similar to IE, and less than FDTD method.
Keywords :
Fourier transforms; electromagnetic wave propagation; parabolic equations; FDTD method; IE method; Loran-C ASF prediction; Loran-C additional secondary factors; PE method; SSFT algorithm; finite-difference time-domain method; ground wave propagation; integral equation method; irregular terrain; parabolic equation method; split-step Fourier transform algorithm; Antennas; Computational modeling; Finite difference methods; Mathematical model; Prediction algorithms; Random access memory; Time-domain analysis; ASFs; FDTD; IE; PE; SSFT; irregular terrain;
Conference_Titel :
Applied Computational Electromagnetics (ACES), 2015 31st International Review of Progress in
Conference_Location :
Williamsburg, VA
