COMMUNICATION HANDHELD TERMINAL
Beidou Xihe Communication Handheld Terminal
Product Definition/Industrial Design
2012
For a long time, satellites have only solved the problem of outdoor positioning, and indoor positioning is still vacant-due to the weak strength of satellite positioning signals and the vulnerability to occlusion and other environmental factors, it is difficult to locate indoors. However, although existing indoor positioning technologies such as WLAN, UWB and other systems have realized local indoor high-precision positioning, a large number of nodes must be arranged, the cost of signal coverage is high, and the operation and maintenance of fingerprint library is difficult, which is not conducive to wide-area promotion. This has caused a big bottleneck in the development of indoor location services.
Based on the high-precision indoor and outdoor seamless positioning technology of Beidou Xihe system, a seamless indoor and outdoor positioning system integrating heaven and earth is constructed TC-OFDM a new signal system integrating positioning and communication. Breaking through a number of indoor high-precision positioning key technical bottlenecks, its horizontal positioning accuracy is better than 3 meters, and the height direction accuracy reaches 1 meter.