Due to the absence of the Egyptian terrestrial gravity data from the collected global data used for the solution of the international EGM96 harmonic model, this model was previously tailored to Egypt, using both the least-squares collocation (LSC) and the Stokes’ integral methods. The relevant tailored models were called EGM96EGCT and EGM96EGIT and were estimated up to degree and order 599 and 650, respectively. In this paper, the two tailoring solutions, which are based on two different techniques, are compared according to their local performance in Egypt. The two models showed similar improvement in their fitness to the local Egyptian data, and consequently, they are considered equally capable of recovering the long-medium wavelength features of the gravity field in Egypt. |
