#TITLE_ALTERNATIVE#

• Main Author: TRYSA YUHERDHA (NIM: 25112019); pembimbing: Dr. techn. Dudy Darmawan Wijaya, , ANGGA
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/17971
• Institution: Institut Teknologi Bandung

The main accuracy-limiting factor in SLR (Satellite Laser Ranging) technique is the accuracy of the atmospheric correction model. This limitation causes the millimeter accuracy for SLR technique is difficult to achieve. To achieve the millimeter accuracy, the quality of atmospheric correction model for SLR must be improved. The latest atmospheric correction model for SLR and still being used until now is the Mendes-Pavlis model that is known as FCULb. The model was generated from ray tracing through only one year of radiosonde data during 1999. In this research, a new approach for correcting atmospheric effects in SLR observations has been proposed. The proposed approach utilizes the most widely accepted atmospheric correction model for GNSS (Global Navigation Satellite System) observation, i.e. the VMF1 (Vienna Mapping Function 1) model. It has been widely known that the VMF1 model is regularly updated based on current global atmospheric data provided by the ECMWF (European Centre for Mid-range Weather Forecast). Physically, the GNSS and SLR signals propagate through the same atmospheric medium. Therefore, the VMF1 model could be used for SLR observations by applying an appropriate scaling factor. According to results from ray tracing simulations, it is found that, comparing to the latest atmospheric model FCULb, the scaled VMF1 slightly improves the hydrostatic component by approximately 4-20 mm and 0.2-1.5 mm for the non-hydrostatic component for observations at 10⁰ elevations angle.