MODIFYING THE AFM METHOD FOR THE SOLUTION OF PHASE AMBIGUITY AT SEA AREAS

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.

SAFARI A.; JAMOUR Y.; GHANIZADEH M.

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

Journal Paper

Paper Information

Journal: Year:2009 | Volume:43 | Issue:4 (122) Page(s): 431-440

Download Full-Text

View:

239

Download:

Cites:

Information Journal Paper

Title

MODIFYING THE AFM METHOD FOR THE SOLUTION OF PHASE AMBIGUITY AT SEA AREAS

Author(s)

SAFARI A. | JAMOUR Y. | GHANIZADEH M. | Issue Writer Certificate

Keywords

PHASE AMBIGUITY

NAVIGATION

GLOBAL POSITIONING SYSTEM

AMBIGUITY FUNCTION METHOD

Abstract

Nowadays we can use GLOBAL POSITIONING SYSTEMs (GPS) for NAVIGATION and the establishment of pipe lines at the sea areas.Applications such as the establishment of pipe lines at sea area or 3D NAVIGATION in canals with narrow width need positioning with accuracy better than 1 meter. In such high accuracy applications, the main observable is carrier phase measurement. The main problem with carrier phase measurement is PHASE AMBIGUITY. The solution of PHASE AMBIGUITY is the under influence of cycle slip at the sea areas. There are two reasons for cycle slip at the sea area (1) multipath effect due to reflection of the received waves at sea surface near to antenna (2) fluctuations of the sea surface which exerts some acceleration on antenna. The majorities of PHASE AMBIGUITY solution methods use least square but least square method is the under influence of cycle slip effect because it causes the divergence of the least square. AMBIGUITY FUNCTION METHOD (AFM) is a method which is safe against the cycle slip. Ergo in this research AFM method is proposed for PHASE AMBIGUITY solution at the sea areas. AFM method applies for determination of a set of integer ambiguity.The algorithmic steps of AFM method is as follows: i) Approximate coordinate of the station.ii) Define a neighborhood with a special criterion near to station.iii) Compute ambiguity function for each candidate and store one with maximum value.iv) Compute integer ambiguity using coordinates from best solution.The topic of this paper is to modify AFM method as an efficient method for solving PHASE AMBIGUITY in sea areas.

Cites

No record.

References

No record.

Cite

APA: Copy

SAFARI, A., JAMOUR, Y., & GHANIZADEH, M.. (2009). MODIFYING THE AFM METHOD FOR THE SOLUTION OF PHASE AMBIGUITY AT SEA AREAS. JOURNAL OF FACULTY OF ENGINEERING (UNIVERSITY OF TEHRAN), 43(4 (122)), 431-440. SID. https://sid.ir/paper/574840/en

Vancouver: Copy

SAFARI A., JAMOUR Y., GHANIZADEH M.. MODIFYING THE AFM METHOD FOR THE SOLUTION OF PHASE AMBIGUITY AT SEA AREAS. JOURNAL OF FACULTY OF ENGINEERING (UNIVERSITY OF TEHRAN)[Internet]. 2009;43(4 (122)):431-440. Available from: https://sid.ir/paper/574840/en

IEEE: Copy

A. SAFARI, Y. JAMOUR, and M. GHANIZADEH, “MODIFYING THE AFM METHOD FOR THE SOLUTION OF PHASE AMBIGUITY AT SEA AREAS,” JOURNAL OF FACULTY OF ENGINEERING (UNIVERSITY OF TEHRAN), vol. 43, no. 4 (122), pp. 431–440, 2009, [Online]. Available: https://sid.ir/paper/574840/en

Related Journal Papers

No record.

Related Seminar Papers

No record.

Related Plans

No record.

Recommended Workshops