16 Questions 41 Answers 0 Followers
Questions related from Abdelrahim Ruby
The general characteristics of Satellite Laser Ranging (SLR): The photons returning are usually fewer because the transmitting laser and retroreflectors both have a divergence. This means that the...
11 May 2023 9,239 10 View
In an atomic clock: instability in the oscillator and environmental changes can cause frequency drift, although it is often hard to identify between drift and oscillator aging. So, is the...
17 March 2023 2,741 4 View
I am new for Generic Mapping Tool (GMT), but I would like to work through a few simple examples of generating legends (ie. multiple points or lines plotted on a single figure using psxy). In the...
27 April 2018 8,393 3 View
The SRTM90m v4.1 is a digital elevation model with a resolution of 90 metres (3'' Arc-Sec) and available through the CGIAR-CSI data centre web page at...
31 January 2018 8,791 8 View
Recently, many scientific applications such as: In geology, the inversion of the geoid is used for Petroleum Exploration. I am looking for studies and research in this field
02 January 2018 2,641 4 View
I am looking for a research about: Comparison between the three dedicated gravity fields mapping mission, [CHAMP (1996), GRACE (2002) and GOCE (2009)], in geoid modeling (when using the...
02 April 2017 7,760 3 View
Conversion between different permanent tide systems involves either modifying one spherical harmonic coefficient or adding a zonally uniform correction to the geoid undulations. More information...
20 March 2017 4,159 5 View
i need to find the value (on x-axis ) of the first intersection point between two line by matlab See attached for (data ,code and output )
06 September 2016 6,767 6 View
As possible, any researcher helps me to getting this research G. WEBER, 1984: Hochauflösende mittlere Freiluftanomalien und gravimetrische Lotabweichungen für Europa. Wissenschaftliche Arbeiten...
01 July 2016 4,939 1 View
I am looking for satellite image used for academic purposes
11 November 2015 6,823 8 View
I’m looking for a Digital Elevation Models for Relief (topographic + bathymetric) with different resolution of the gridded data varies from true 30-Arc sec and 1-Arc sec
22 September 2015 3,141 13 View
I would like to convert Observed (or measured) Gravity (g) on the earth surface into gravity anomaly and gravity disturbance
03 August 2015 8,597 5 View
HI, all I want to get the program to extract Digital terrain models (DTM’s) or Digital height models (DHM’s) for a certain area from Global Gravity Field Models related to Topography For example ...
13 July 2015 6,710 11 View
I have some questions about Global Gravity Field Models (ICGFM).Where How to Calculate Coefficients of this model? I.e. I need the program to compute spherical harmonic analysis of EGM model.
12 April 2015 3,518 11 View
I am looking for a program to compute into Theoretical (Normal) Gravity (γ) value on the surface of the ellipsoid (WGS84) and Free-Air Anomaly (Δgf) with knowing Observed (or measured) Gravity (g)...
20 March 2015 5,789 5 View
I would like to subtract the contribution from a global gravity model (here EGM96 and EGM08) from the free-air anomalies (Δg) . And the height anomalies (ζ) . Can you suggest a program to do this?
20 March 2015 5,130 2 View