长春工业大学学报(自然科学版)
長春工業大學學報(自然科學版)
장춘공업대학학보(자연과학판)
JOURNAL OF CHANGCHUN UNIVERSITY OF TECHNOLOGY(NATURAL SCIENCE EDITION)
2015年
1期
57-60
,共4页
无线传感器网络%移动节点%定位
無線傳感器網絡%移動節點%定位
무선전감기망락%이동절점%정위
Wireless Sensor Network (WSN)%mobile node%positioning
到达时间差算法(TDOA )是通过测量移动节点接收两个已知节点发射信号的时间差值估算距离,但移动节点需在通信范围内;DV‐hop根据节点之间跳数测距,但估算误差较大。将两种方法相结合,在不增加网络硬件的条件下,提高了定位精度。
到達時間差算法(TDOA )是通過測量移動節點接收兩箇已知節點髮射信號的時間差值估算距離,但移動節點需在通信範圍內;DV‐hop根據節點之間跳數測距,但估算誤差較大。將兩種方法相結閤,在不增加網絡硬件的條件下,提高瞭定位精度。
도체시간차산법(TDOA )시통과측량이동절점접수량개이지절점발사신호적시간차치고산거리,단이동절점수재통신범위내;DV‐hop근거절점지간도수측거,단고산오차교대。장량충방법상결합,재불증가망락경건적조건하,제고료정위정도。
Time Difference of Arrival (TDOA) algorithm is used to estimate the distance with the time difference of transmitting signals between the two receiving nodes but the nodes should be in the range of communication , w hile the DV‐hop algorithm is applied to predict the distance according to the numbers of hop but with more error .We combine the two to obtain the high position accuracy under the same hardware environment .