Hydrostatic Unbab Mapping Function Moditification For Tropospheric Delay

• Main Author: Sakidin, Hamzah
• Format: Conference or Workshop Item
• Language: English
• Published: 2012
• Subjects: T Technology (General); TJ Mechanical engineering and machinery
• Online Access: http://eprints.utem.edu.my/id/eprint/20143/1/HYDROSTATIC%20UNBAB%20MAPPING%20FUNCTION%20MODITIFICATION%20FOR%20TROPOSHERIC%20DELAY-DR%20HAMZAH%20SAKIDIN-MAK%2000633%20RAF.pdf; http://eprints.utem.edu.my/id/eprint/20143/

There are many mapping function models in the form of continued fractions which need many operations in calculation. The mapping function need to be modified to allow faster calculation. UNBab mapping function needs 7 mathematical operations for getting the mapping fuction value. The UNBab mapping function is chosen to be modified due to its ability to calculate mapping function value down to 2 degree of elevation angle. Regression method can be used to modified the mapping function model and also can produce the same result. The calculation of sum of errors shows that the deviation of the modified models from the original models is not significant.