CAJ | 학술논문

基于超声波测距的定位技术以其精度高、范围广和性能稳定等优点，在无线传感器网络中广泛应用。为了实现较大范围的高精度定位，利用自主实现的超声波六元传感器阵列进行TDOA测距，并进行测距误差分析，然后采用基于测地距离的多维定标算法( Geodesic Distance MDS)进行无线传感器网络节点定位。在MATLAB平台下与Cricket采用的迭代式三边定位和AHLoS采用的多点定位算法进行对比仿真实验，结果表明Geodesic Distance MDS算法在不同网络规模和测距误差条件下均能够获得更高的定位精度和较小的定位误差。
기우초성파측거적정위기술이기정도고、범위엄화성능은정등우점，재무선전감기망락중엄범응용。위료실현교대범위적고정도정위，이용자주실현적초성파륙원전감기진렬진행TDOA측거，병진행측거오차분석，연후채용기우측지거리적다유정표산법( Geodesic Distance MDS)진행무선전감기망락절점정위。재MATLAB평태하여Cricket채용적질대식삼변정위화AHLoS채용적다점정위산법진행대비방진실험，결과표명Geodesic Distance MDS산법재불동망락규모화측거오차조건하균능구획득경고적정위정도화교소적정위오차。
For the high accuracy, wide range and stable performance, the ultrasonic positioning technology is becoming an important research point in wireless sensor networks. This paper presents and implements a six-element array ultrasonic sensor and a TDOA ranging experiment. It analysis the ranging error and realizes node localization using geodesic distance based multidimensional scaling positioning algorithm. The MATLAB simulate results show that the geodesic distance MDS algorithm can achieve higher accuracy than Trilateration and Multilateration.