提出一种高性能超声定位系统，采用红外和无线信号同时作为同步信号构成收发异体的定位结构，采用伪随机M序列进行载波扩频，形成码分多址的多基站收发机制，通过设计广角探头来扩大作用范围，设计温度补偿电路提高测量精度. 本系统能实现10 Hz 的测量速率和厘米级的测量精度，能有效实现室内移动目标的高精度定位.

A high performance ultrasonic location system is proposed. Both infrared and radio signals are applied as synchronizing signals，forming a locating structure with separated transmitter and receiver. Pseudo random M sequence is utilized as spread spectrum carrier to form a CDMA-based multi-station mechanism. Wide-angle probes are designed for expanding the detecting area. In addition， a temperature compensation circuit is designed to improve the 　　measurement accuracy. This system can achieve 10 Hz sample rate and centimeter level measurement accuracy，and is verified to be effective for locating moving indoor targets.