Subscribe to the gold package and get unlimited access to Shamra Academy
Register a new userPreparing a program for transformation between geographic and plane coordinates of the Syrian Lambert projection
إعداد برنامج للتحويل بين الإحداثيات الجغرافية و المستوية في ارتسام لامبير السوري
2709
2 108
0
(
0
)
Authors
دارين نوفل( باحث )
Created by
Shamra Editor
Ask ChatGPT about the research
يهدف البحث بشكل أساسي إلى تطوير برنامج رياضي للتحويلات بين الإحداثيات الجغرافية و المستوية في الارتسام المخروطي السوري المطابق بنماذجه الثلاث الماس و القاطع و شبه المطابق, و ذلك بهدف تمكين كافة الاختصاصيين و المساحين و المهتمين من القيام بعمليات التحويل المباشر و العكسي لإحداثيات النقاط الأفقية في هذا الارتسام دون الرجوع إلى أية جهات مختصة أخرى و ما يترتب على ذلك من تعقيدات إدارية و حسابية.
The main objective of this research is to develop an arithmetic model for transformations between geographic and State Plane Coordinate within the three types of Conformal Syrian Conical projection (tangent, secant and Semiconformal), In order to enable all Specialists and surveyors to carry out direct and reverse transformations of horizontal coordinates of the points without returning to any competent authorities to avoid any administrative and computational complexities.
References used
Bomford , G.(1980) Geodesy – the edn. Clarendon Press . Oxford
Jonathan Iliffe. (2000) – Datums and Map projections for remote sensing, GIS, and Surveying – Department of Geomatic Engineering University College London
OGP Surveying and Positioning Guidance Note Number7,Part2-July2007 Coordinate Conversions and Transformations including Formulas
rate research
Read More
This study aimed at investigating the student-teachers' point of views
towards the role of practicum teaching program in the physical education
faculty at Yarmouk University in preparing the student-teacher. A
descriptive analytical design was use
d in the study.
For the purpose of the study, the researcher used a questionnaire to
collect the needed data from a purposeful sample of 70 student-teachers.
Search includes the geodetic study local network triangulation real estate in Slenfeh
area, and propose a solution for the local network linking public real estate network in
Syria based on a comparison of the 2D-Transformation results so as to cho
ose the optimal
conversion which avoids the occurrence of interactions between regions and schemes real
estate and reduces distortions network after conversion (shift, rotation, scale). At first been
touched to date geodesic network set up in Slenfeh region and the stages of execution, and
the problems of engineering, and then to the transformation methods used in the link, and
apply them to the network, and choose the best conversion, and set parameters optimal
transformation, have been proposed solution depends on the network is divided into three
segments so that Network least deformation resulting from the transformation in each
sector.
A computer program that has been prepared for the implementation of the
transformation and linking local grid points by using the C # programming language.
It has been verified the resultant transformation parameters by comparing linear
measurements calculated from coordinates resulting from the transformation with linear
measurements in the network observation records, and execution field measurements of
some of the points and calculate its coordinates and compare it with the coordinates
calculating fromtransformation.
The transformation of coordinates between the global coordinate system yield
ellipsoid WGS84 (World Geodetic System 1984) and the local coordinate system yield
ellipsoid Clark1880 in different regions of Syria, is the essential step in the effectiv
e use of
GNSS (Global Navigation Satellite Systems) surveying techniques in Syria, and the
transformation occurs with 3D transformation between one ellipsoid and another, or 2D
transformation directly between two planar. The transformation must be understood,
analyzed and tested. The research is about the accuracy of the 2D transformation in small
area to give coordinates can be directly used in different surveying and engineering works,
and about studying the common points number and their distribution effect on
transformation accuracy, and conclude that the biggest effect on transformation accuracy is
for the common points distribution.
Changing is a natural Phenomenon. It guides all of existents
apparent in different fields. But transformation is another exercise to
make a change in different fields of human life in nature, moral, politic,
economic, and others fields.
We have t
wo ideas: changing and transformation. There is so much
difference between these two ideas, though they have the same source,
but this difference is connected with nature of act.
The important matter which we are trying to clear is the ability and
capacity we can benefit from in changing and transformation as they
spontaneous operation. To have these benefits we are studying these two
ideas from those conceptions, particularities of the nature of this act.
The main goal of this study is to produce landslide sensitivity mapusing GIS at
Syrian Coast area.At the first stage of the study, 75% of the landslides locations (45
landslide locations) are used as training dataset and the rest was used as (15 la
ndslide
locations) the validation dataset. Fourteen input data layers were employed as landslide
conditioning factors in the landslide sensitivity mapping. These factors are slope degree,
aspect, altitude, plan curvature, profile curvature, tangential curvature, surface area ratio
(SAR), lithology, land use, distance from faults, distance from rivers, distance from roads,
topographic wetness index (TWI) and stream power index (SPI).
Using these conditioning factors, landslide sensitivity index was calculated.
Subsequently, the result was plotted in ArcGIS and landslide sensitivity map was obtained.
The produced sensitivity map is useful for general land-use planning.
Log in to be able to interact and post comments
comments
Fetching comments
Sign in to be able to follow your search criteria
