基于FPGA的超声波小型空间定位系统设计：讨论了一种新型的小型空间定位系统。该系统采用三角形测量原理实现三维精确定位，利用FPGA丰富的查找表结构完成算法。可随时根据实际检测或实验数据更新查找表，降低系统偏差，使其适用范围更广，定位精度更高。并采用动态扫方式将测量结果实时地显示出来。关键词：FPGA器件；超声波传感器；小型空间；定位系统Abstract：A kind of new small space ultrasonic positioning system is introduced in this paper． The system uses the triangle survey principle to realize three dimensional positioning and USeS the rich lookup table structure of FPGA to complete the algorithm． It can renew the lokup table according to the actual examination or the experimental data，and it can also reduce the system deviation，which means a better positioning an d a wider application．And the measuring result Can be displayed immediately through dynamic scanning．Key words：FPGA；ultrasonic sensor；small space；positioning system