Evaluation of Tropospheric & Clock Errors for Precision GPS Positioning & Navigation
VC. Vishnu Vardhan Reddy1, M. Manohar Reddy2, G. Akshitha3, K.S. Ramesh4, R. Revathi5
1VC. Vishnu Vardhan Reddy, Student, Electronics and Communication Department, Koneru Lakshmaiah Education Foundation, Vaddeswaram, Guntur District, India.
2M. Manohar Reddy, Student, Electronics and Communication Department, Koneru Lakshmaiah Education Foundation, Vaddeswaram, Guntur District, India.
3G. Akshitha, Student, Electronics and Communication Department, Koneru Lakshmaiah Education Foundation, Vaddeswaram, Guntur District, India.
4Dr. K.S. Ramesh, Professor, Electronics and Communication Department, Faculty of Engineering, Koneru Lakshmaiah Education Foundation, Vaddeswaram, Guntur District, India.
5Dr. R. Revathi, Associate Professor, Electronics and Communication Department, Faculty of Engineering, Koneru Lakshmaiah Education Foundation, Vaddeswaram, Guntur District, India.

Manuscript received on 21 April 2019 | Revised Manuscript received on 27 May 2019 | Manuscript published on 30 May 2019 | PP: 3462-3467 | Volume-8 Issue-1, May 2019 | Retrieval Number: A3404058119/19©BEIESP
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Abstract: Positional inaccuracies in GPS are caused by severalerrors such as Ionospheric, Tropospheric, Satellite Clock, Receiver Clock etc., Instantaneous correction of these error aids in precise navigation. In the present work Original Hopfield model is considered for the tropospheric correction. The instantaneous tropospheric correction results in more precise position using GPS.
Index Terms: Clock Error, Ephymeris Error, Global Positioning System (GPS), Original Hopfield model, Tropospheric Delay

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