Indexing
All Issues
Submission
Author Guidelines
Reviewers
Editorial Members
Publication Fee
Vol.4 , No. 5, Publication Date: Sep. 20, 2017, Page: 42-47
 GPS control points, established by the federal surveys of Nigeria in Adamawa state. Two type of data were used, Receiver Independence Exchange (RINEX) and Absolute positioning data. The raw RINEX GPS data obtained from the field were downloaded into the computer using GRIGO software and were later post processed using P4 software; while that of absolute positioning data, there mean were calculated. The results were tested statistical to determine which method meets the requirement for surveying. For the computed standard errors, the geodetic GPS receiver with post processed data was 0.0001m for Northings and 0.0128m for Easthings, while that of geodetic GPS receiver with absolute positioning was 0.0015m for Northings and 0.0141m for Easthings. Base on the analysis, the post processed data was more precise to that of the absolute positioning. Hence data Obtained using a hand held GPS when post-processed can now be recommended for surveying jobs and other professional bodies.&picture=http://www.aascit.org/aascit/decorators/img/journal/924.jpg)
| [1] | Tata Herbert, Department of Surveying and Geoinformatics, School of Environmental Technology, Federal University of Technology, Akure, Nigeria. |
Hand held GPS have become the most useful instrument used by Surveyor and many professional bodies in obtaining data for several purposes. The need to determine an approach in using hand held GPS is required as the accuracy is not reliable. Assessing the accuracy of control point using post-processed and absolute positioning data was carried out using five (5) GPS control points, established by the federal surveys of Nigeria in Adamawa state. Two type of data were used, Receiver Independence Exchange (RINEX) and Absolute positioning data. The raw RINEX GPS data obtained from the field were downloaded into the computer using GRIGO software and were later post processed using P4 software; while that of absolute positioning data, there mean were calculated. The results were tested statistical to determine which method meets the requirement for surveying. For the computed standard errors, the geodetic GPS receiver with post processed data was 0.0001m for Northings and 0.0128m for Easthings, while that of geodetic GPS receiver with absolute positioning was 0.0015m for Northings and 0.0141m for Easthings. Base on the analysis, the post processed data was more precise to that of the absolute positioning. Hence data Obtained using a hand held GPS when post-processed can now be recommended for surveying jobs and other professional bodies.
Keywords
RINEX Data, Absolute Data, Post-Processing, Handheld GPS
Reference
| [01] | Alfred, L. (2007). GPS satellite surveying, 2nd edition Review of Linear Algebra and its Applications, 2nd Edition by Peter D. Lax. John Wiley and Sons, David S. Watkins. Department of Mathematics. |
| [02] | Don, B. (2007). A practical guide to GPS-UTM. |
| [03] | Hill, C. J. (1999). P4 User Guide pseudorange and phase post-processor Institute of Engineering Surveying and space Geodesy University of Nottingham. UK. |
| [04] | Jone, S., Brian, G., Phili, H. and Jone, B. (2003) Global Position System, Published by Back well Ltd. UK. |
| [05] | Kaplan, E. D. (1996). Understanding GPS principles and Application. Paraclet publication, UK. |
| [06] | Musa, A. A. (2003). The role of digital technology in surveying, a seminar paper presented at the Nigerian Institute of surveying student week, Federal university technology Yola (Unpublished). |
| [07] | Ndukwe, K. N. (2001). Digital technology in surveying and mapping Rhyce Rerec p. 110. Enugu campus. |
| [08] | Nworgu, B. G. (1991) Educational Research, Wisdom Publisher Ltd Ibadan. |
| [09] | Nathaniel, B., (2002). The American practical Navigator – chapter 11 Satellite Navigation, United state government. |
| [10] | Peter, H., (1994). Global positioning system overview, Department of Geography, university of Texas. |
| [11] | Parkinson, S., (1996). The global positioning system, American Institute of Aeronautics and Astronautics ISBN 978-1-56347-106-3. |
| [12] | Tata H, Oyatayo K. T and Abimiku E. S (2013). A Comparative Analysis of a Post-Processed RINEX Data and Absolute Positioning Data, Obtained from a Hand Held GPS to that of a Geodetic GPS Receiver. Journal of Social Sciences and Public Affairs. Volume 3, Number 2 WEBSITES. |
| [13] | General Application of GPS (last accessed on 12/23/2005). |
| [14] | http://www.gmat.unsw.edu.an/snap/gps/gpssurvey/chap 2/23/.htm |
