CPC G04R 20/04 (2013.01) [G01S 19/256 (2013.01)] | 17 Claims |
1. A satellite radiowave receiving device comprising:
a processor, wherein the processor obtains first date and time information included in radiowaves received via a receiver from a single positioning satellite which is acquired first after a start of receipt of radiowaves,
wherein, in response to the processor receiving radiowaves via the receiver from multiple satellites which include the single positioning satellite and which are required for a positioning calculation, the processor modifies second date and time information which is counted by a clock circuit using the first date and time information,
wherein the processor performs the positioning calculation using the second date and time information of the multiple positioning satellites and a predicted orbit data retrieved from a memory of the device, and
wherein the predicted orbit data is collected and retained in the memory before the obtaining of the radiowaves for retrieval.
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