本文選題：智慧農(nóng)業(yè)　切入點(diǎn)：無線傳感器　出處：《江蘇農(nóng)業(yè)科學(xué)》2017年17期 　論文類型：期刊論文

【摘要】：為提高智慧農(nóng)業(yè)中無線傳感器目標(biāo)定位的精度,采用改進(jìn)四邊測距算法。首先通過4個查詢節(jié)點(diǎn)坐標(biāo)構(gòu)造與信標(biāo)節(jié)點(diǎn)坐標(biāo)的線性方程,為兼顧定位區(qū)域其他信標(biāo)節(jié)點(diǎn)定位誤差,對信標(biāo)節(jié)點(diǎn)的坐標(biāo)誤差求均值;隨后未知節(jié)點(diǎn)到信標(biāo)節(jié)點(diǎn)的距離采用牛頓迭代求精;最后對鄰居位置相對不集中的節(jié)點(diǎn)進(jìn)行排除,并且給出了算法流程。試驗(yàn)仿真顯示,在信標(biāo)節(jié)點(diǎn)比例增加的情況下,該算法比其他算法的定位誤差下降速度快,定位誤差與其他算法間隔比較大,而且變化幅度較小,定位性能趨于穩(wěn)定。
[Abstract]:In order to improve the precision of target location of wireless sensor in intelligent agriculture, an improved quadrilateral ranging algorithm is adopted. Firstly, the linear equation between the coordinates of four nodes and the coordinates of beacon nodes is constructed to give consideration to the localization errors of other beacon nodes in the localization area. The mean value of coordinate error of beacon node is obtained; the distance between unknown node and beacon node is refined by Newton iteration; at last, the node whose neighbor position is relatively not concentrated is excluded, and the algorithm flow is given. When the number of beacon nodes increases, the localization error of this algorithm decreases faster than that of other algorithms, and the distance between the location error and other algorithms is larger, and the range of variation is small, and the localization performance tends to be stable.
【作者單位】： 黃淮學(xué)院;河南師范大學(xué)新聯(lián)學(xué)院;
【基金】：河南省教育廳課題(編號:2016-JSJYYB-182)
【分類號】：S126;TP212
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本文編號：1557730