METHOD FOR CALCULATING ESTIMATE VALUE OF VERTICAL TROPOSPHERE DELAY AMOUNT

摘要

PPROBLEM TO BE SOLVED: To provide a method for calculating an estimate value of a vertical troposphere delay amount in real time and a method for correcting troposphere delay of a satellite positioning signal in positioning. PSOLUTION: A plurality of parameters in which distances between certain two points are parameters are set, and the vertical troposphere delay amounts in the two points are obtained, a difference of them is obtained. The vertical troposphere delay amounts using a model function are obtained, and a difference of them is determined. Then, a difference between the two differences is obtained as an error. The parameter satisfying an error range is selected from the errors. The estimate value ZXTDSBB/SBof the vertical troposphere delay amount at a reference point B of an area to be corrected where a point A exists, is calculated, and is transmitted to the point A as correction information. The estimate value ZTDSBA/SBof the vertical troposphere delay amount at the point A is calculated by correcting the model function fSBZTD/SB(A) of the vertical troposphere delay amount at the point A. Furthermore, an elevation of the received satellite positioning signal is obtained to correct troposphere delay of the satellite positioning signal by the troposphere delay amount of the satellite positioning signal. PCOPYRIGHT: (C)2009,JPO&INPIT