| 摘要 |
Methods and systems for estimating the position of a radio signal receiver (1) are described. The position of a first stationary radio signal transmitter (A) is estimated using a primary set of positioning resources available to the receiver (1). Once the position of the first transmitter has been determined, it is added to a secondary set of positioning resources available to the receiver (1). If the primary set of positioning resources is ineffectual, the secondary set of positioning resources may be used to estimate the position of the receiver (1). |
