CAJ | 학술논문

利用无线传感器网络建立低成本、高精度的实时定位系统,是当今的研究热点之一.通过多组实验数据对比,提出了"当前的无线芯片不适用于基于RSS技术的指纹定位技术"的观点,并在此基础上引入TOA(Time of Arrive)技术,设计并实现了基于TOA的指纹定位系统.该系统利用了当前的基于RSS的指纹定位系统,将TOA获得的测量距离值作为参考信号,利用无线信号的连续性改进了定位精度.实验数据表明,该系统在复杂的环境下达到了一定的精度,有一定的实用意义.
이용무선전감기망락건립저성본、고정도적실시정위계통,시당금적연구열점지일.통과다조실험수거대비,제출료"당전적무선심편불괄용우기우RSS기술적지문정위기술"적관점,병재차기출상인입TOA(Time of Arrive)기술,설계병실현료기우TOA적지문정위계통.해계통이용료당전적기우RSS적지문정위계통,장TOA획득적측량거리치작위삼고신호,이용무선신호적련속성개진료정위정도.실험수거표명,해계통재복잡적배경하체도료일정적정도,유일정적실용의의.
How to set up a low-cost, high-accuracy real-time location system based on wireless sensor network is one of the popular research topics. This paper, according to our analysis on various sets of experimental data, suggests that current wireless chips are not suitable for location fingerprinting based on RSS. In addition, a new location fingerprint system based on TOA is proposed. It regards distances from TOA as reference signals and makes use of wireless signal's continuity to improve the location accuracy. The experimental data show that this system achieves considerable accuracy in complicated environments.