Adaptive positioning signal search strategy for mobile devices

摘要

Associating a coverage area, the mobile positioning signals first in order to catch the first positioning signal which is transmitted by the first transmitter of the first satellite in geostationary orbit, to determine the rough position of the mobile device Various techniques may be implemented in a mobile device in order to act on the positioning signal search strategy based at least in part on the rough position of the device is provided. Search strategy, at least one of the at least one satellite that is estimated to be located in position for transmitting the second positioning signal which can be searched by the mobile device and located in at least a portion of the coverage area, the non-geostationary orbits It is possible to identify the transmitter of Tsu. For example, in the case of certain Such techniques, can reduce the time up to the first position fixed. [Selection] Figure Figure 1