| 摘要 |
The present invention solves simply and effectively the problem of precise positioning of a moving target in a complex environment by using the method in which position information is provided for a mobile tag by using low-cost fixed active electronic tags in place of many readers requiring network connection, and the position information of a mobile tag is directly transferred to a reader at the center of a positioning area from a long distance through a mobile or fixed position tag. The present invention uses a long-distance coordinator and clock information in a transmission instruction to coordinate and schedule communication time between the mobile tag and the position tag, thereby ensuring the super long battery life of the mobile tag and the position tag. The present invention further solves the problem of signal collision during communication by controlling the communication distance between the mobile tag and the position tag and a specific time slot allocation manner. The present invention not only greatly decreases the construction and maintenance costs of the system, and significantly improves the positioning accuracy of the whole system and the operational reliability of the system, but also is very simple in use. |
