SATELLITE NAVIGATION RECEIVER

摘要

PURPOSE:To enable an accurate high-tide time and a low-tide time to be found by utilizing information of a satellite navigation receiver at a current position. CONSTITUTION:Latitude, longitude, and height information of a current position is supplied from a satellite navigation method receiver 1 to an operation portion 2. Information regarding a lunar orbit which is preset is supplied from a memory 3 to the operation portion 2. The operation portion 2 calculates accurate a high-tide time and a low-tide time accurately based on the information and then displays them on a display portion 4.