Scientific- Research Quarterly of Geographical Data (SEPEHR)

Efficiency of Fourier transformation in studying of ionosphere time series

Volume 34, Issue 134, Summer 2025, Pages 101-118

10.22131/sepehr.2025.2019229.3048

Ramin Ali ramei, Mohammad Reza Seif, Seyyed Reza Ghaffari Razin

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Modeling of ionosphere TEC using gated recurrent unit neural network model and comparison against other models

Volume 33, Issue 132, Winter 2025, Pages 25-43

10.22131/sepehr.2024.2005444.2989

Seyyed Reza Ghaffari-Razin, Navid Hooshangi

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Analysis of ionospheric anomalies in earthquakes using mean index and short time Fourier transform

Volume 32, Issue 128, Winter 2024, Pages 5-25

10.22131/sepehr.2023.563480.2914

Lida Koshki, Behzad Voosoghi, Seyyed Reza Ghaffari-Razin

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Estimation of Precipitable Water Vapor (PWV) using learning-based methods in north-west of Iran

Volume 30, Issue 120, Winter 2022, Pages 139-155

10.22131/sepehr.2022.251059

Seyyed Reza Ghaffari-Razin, Navid Hooshangi

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Application of wavelet neural network with Particle Swarm Optimization (PSO) learning algorithm in modeling of ionospheric total electron content temporal variations

Volume 28, Issue 112, Winter 2020, Pages 7-18

10.22131/sepehr.2020.38603

Mir Reza Ghaffari Razin, Behzad Vosooghi

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Time series analysis of the position of GPS permanent station using Auto Regressive Moving Average (ARMA) technique

Volume 25, Issue 97, Spring 2016, Pages 5-13

10.22131/sepehr.2016.20132

Fereydoon Nobakht Ersi, Abdolreza Safari, Mohammad Ali Sharifi

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The Use of Expert System and Dynamic GIS in for Instant Guidance of Traffic in Tehran on the Basis of Air Pollution Condition

Volume 19, Issue 75, Autumn 2010, Pages 78-83

Nahid Sajjadian, Mahyar Sajjadian

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GPS Application in Urban Planning

Volume 17, Issue 65, Spring 2008, Pages 52-59

Mas'oud Taghvaei, Elham Amirhajlou

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Remote Geographic Information Control and Process

Volume 16, Issue 61, Spring 2007, Pages 2-9

Mahdi Modiri

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The Necessity of National Positioning Systems as Complementary to Foreign Satellite Positioning Systems during Peacetime and Substitute in Crisis

Volume 15, Issue 57, Spring 2006, Pages 34-41

Alireza Azmoodeh Ardalan, Mohammad Edrisian

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