一種局部模式的RGB差值序列交叉區域取樣節點(diǎn)定位算法

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一種局部模式的RGB差值序列交叉區域取樣節點(diǎn)定位算法
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作者單位:(1.嘉應學(xué)院 計算機學(xué)院, 廣東 梅州 514015;2.暨南大學(xué) 信息科學(xué)技術(shù)學(xué)院, 廣州 510632)
作者簡(jiǎn)介:李秉鍵(1976-),男,碩士,實(shí)驗師,主要從事無(wú)線(xiàn)傳感器網(wǎng)絡(luò )和物聯(lián)網(wǎng)方向的研究。[FQ)]
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A Local Cross Region of RGB Difference Sequence Sampling WSN Localization Algorithm

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(1.Department of Computer Science, Jiaying University, Meizhou 514015,China; ;2.College of Information Science and Technology, Jinan University, Guangzhou 510632,China)

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摘要:

鑒于當前無(wú)線(xiàn)傳感器網(wǎng)絡(luò )(WSN)移動(dòng)節點(diǎn)定位技術(shù)中存在的實(shí)時(shí)性差和定位不準確的問(wèn)題,設計了一種交疊區域采樣模式的WSN移動(dòng)節點(diǎn)定位算法OASM_MNL(overlapping area sampling mode of mobile node localization);該算法通過(guò)獲取的信號在能夠直接和移動(dòng)節點(diǎn)通信的信標節點(diǎn)的信號交疊區域里面進(jìn)行局部采樣；通過(guò)距離比例因子對平均跳距進(jìn)行權值化,優(yōu)化了CDL中跳距的計算公式；通過(guò)RGB差值序列對樣本點(diǎn)濾波,在此基礎上把差值序列絕對值作為加權標準,計算出移動(dòng)節點(diǎn)的坐標;仿真結果表明,與E-CDL、MCL等常見(jiàn)的移動(dòng)節點(diǎn)定位算法相比,新算法定位誤差降低幅度超過(guò)33%,定位效果良好。

Abstract:

Aiming at the problem that the real time difference and location of the mobile node localization technology in wireless sensor networks (WSN), this paper proposes a new method of WSN mobile node localization algorithm based on overlapping area sampling mode of mobile node localization. In this algorithm, the signal is obtained by using the signal in the signal intersection area of the beacon node, and the average hop distance is calculated by using the distance scale factor. The calculation formula of the jump distance in CDL is optimized; The RGB difference sequence is used to filter the sample point, and the absolute value of the difference sequence is used as the weighted standard to calculate the coordinates of the mobile node. Simulation results show that compared with common mobile node localization algorithm such as E-CDL and MCL, the positioning error of the new algorithm is reduced by more than 33%, its positioning performance is good.

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李秉鍵,鄭力明.一種局部模式的RGB差值序列交叉區域取樣節點(diǎn)定位算法計算機測量與控制[J].,2016,24(7):195-199, 204.

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收稿日期:2015-12-20
最后修改日期:2016-02-15
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