COMPUTATION OF ASTRONOMICAL COORDINATES VIA COMBINATION OF GPS AND TOTAL STATION OBSERVATIONS

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

ARDALAN A.A.; HASHEMI FARAHANI H.

Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: Year:2006 | Volume:39 | Issue:5 (93) Page(s): 653-660

Download Full-Text

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Persian Verion

View:

3,147

Download:

Cites:

Information Journal Paper

Title

COMPUTATION OF ASTRONOMICAL COORDINATES VIA COMBINATION OF GPS AND TOTAL STATION OBSERVATIONS

Author(s)

ARDALAN A.A. | HASHEMI FARAHANI H. | Issue Writer Certificate

Keywords

Not Registered.

Abstract

Total Station (TS) observations {horizontal angle, vertical angle, slop angle} are made in Local Astronomy (LA) coordinate system, while GPS observation {geodetic longitude, geodetic latitude, ellipsoidal height} are made in a Geodetic (G) coordinate system named WGS84. Connecting parameters between these two coordinate systems are components of deflections of vertical {ξ , η} Possibility of making TS and GPS observations at the same points motivated us to make a feasibility study of using these two observations at the same points for computation of the deflections of vertical. Knowing the deflection of vertical and GPS coordinates; astronomical longitude and latitude can be computed. In this study first the required mathematical models for computing astronomical longitude and latitude via combination of TS and GPS observations are derived and next tested at a Laplace station of 1st order triangulation network of Iran. The mathematical model is built in a way that the number of observations (equations) be more than unknowns so that the least squares adjustment can be performed. The derived astronomical coordinates are compared with those observed at the Laplace station. The result of the comparison indicates that 5.6" accuracy can be achieved in the computation of astronomical coordinates using the derived procedure. The results of the test computations assures that the combination of TS and GPS observation can be regarded as an alternative method for obtaining astronomical coordinates at the GPS era. Besides knowing the transformation parameters between LA and G coordinates systems, the GPS coordinates can be generated by TS. The latter possibility can be regarded as an answer to long time open problem of using GPS at the urban areas with high risk of multi path and frequent blockage of the GPS signals due to obstacles in the urban areas.

Cites

No record.

References

No record.

Cite

APA: Copy

ARDALAN, A.A., & HASHEMI FARAHANI, H.. (2006). COMPUTATION OF ASTRONOMICAL COORDINATES VIA COMBINATION OF GPS AND TOTAL STATION OBSERVATIONS. JOURNAL OF FACULTY OF ENGINEERING (UNIVERSITY OF TEHRAN), 39(5 (93)), 653-660. SID. https://sid.ir/paper/14448/en

Vancouver: Copy

ARDALAN A.A., HASHEMI FARAHANI H.. COMPUTATION OF ASTRONOMICAL COORDINATES VIA COMBINATION OF GPS AND TOTAL STATION OBSERVATIONS. JOURNAL OF FACULTY OF ENGINEERING (UNIVERSITY OF TEHRAN)[Internet]. 2006;39(5 (93)):653-660. Available from: https://sid.ir/paper/14448/en

IEEE: Copy

A.A. ARDALAN, and H. HASHEMI FARAHANI, “COMPUTATION OF ASTRONOMICAL COORDINATES VIA COMBINATION OF GPS AND TOTAL STATION OBSERVATIONS,” JOURNAL OF FACULTY OF ENGINEERING (UNIVERSITY OF TEHRAN), vol. 39, no. 5 (93), pp. 653–660, 2006, [Online]. Available: https://sid.ir/paper/14448/en

Related Journal Papers