| 摘要 |
<p>PROBLEM TO BE SOLVED: To appropriately set the start condition of a filter operation in a positioning operation.SOLUTION: The positioning device 1 receives a positioning signal from a positioning satellite and captures and tracks the positioning signal (S101). The positioning device 1 performs the positioning by the weighting least square method (S102). The positioning device 1 performs the positioning by the least square method, and demodulates a navigation message and calculates the PDOP (S103). When the PDOP is a first threshold THd or less, the positioning device 1 calculates theχvalue (S105). When theχvalue is a second threshold THk or less, the positioning device 1 stops the positioning by the least square method, and switches it to estimation positioning by filter operation (S107).</p> |
