| 摘要 |
A positioning receiver and method in which the time required for signal acquisition can be reduced and positioning time can be reduced by increasing the occasion of the signal acquisition. In an SPS receiver mounted user equipment (100), a Doppler shift amount measuring means (112a) of a frequency search range control unit (112) measures the Doppler shift amount of the signals from a plurality of base stations of a communication network. A search range control means (112b) calculates the difference between the maximum value and minimum value of the measured Doppler shift amount of the base stations and determines the search range at the time of satellite signal search by comparing the difference and a predetermined threshold. The search range control means (112b), if it is judged that the difference between the maximum value and minimum value of the Doppler shift amount is larger than the threshold, sets the search range larger and, if not, sets the search range less.
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