基于多LED的高精度室內(nèi)可見(jiàn)光定位方法
doi: 10.11999/JEIT140725 cstr: 32379.14.JEIT140725
基金項(xiàng)目:
國(guó)家自然科學(xué)基金(61371091)資助課題
Multiple LED Based High Accuracy Indoor Visible Light Positioning Scheme
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摘要: 針對(duì)可見(jiàn)光室內(nèi)定位問(wèn)題，該文基于接收信號(hào)強(qiáng)度(RSS)定位技術(shù)，提出一種利用多個(gè)LED發(fā)射端實(shí)現(xiàn)室內(nèi)定位的方法，即MLED-RSS定位算法。該方法在充分考慮LED拓?fù)浣Y(jié)構(gòu)對(duì)定位性能影響的基礎(chǔ)上，利用部署在室內(nèi)的多個(gè)LED，合理選擇其中3個(gè)LED作為發(fā)射節(jié)點(diǎn)，采用改進(jìn)的三邊定位法獲得定位目標(biāo)位置信息。定位算法可以有效地解決可見(jiàn)光定位存在的遮擋效應(yīng)。仿真實(shí)驗(yàn)表明，MLED-RSS算法可以實(shí)現(xiàn)高定位精度。
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關(guān)鍵詞:
- 室內(nèi)定位 /
- 可見(jiàn)光通信 /
- 接收信號(hào)強(qiáng)度 /
- 三邊定位法
Abstract: In order to apply Visible Light Communication (VLC) to indoor positioning, based on the Received Signal Strength (RSS) positioning technology, a scheme namely MLED-RSS positioning algorithm, utilizing multiple LED transmitters to achieve indoor positioning is proposed in this paper. In the proposed scheme, the impact of topology on positioning performance is fully considered, three LEDs are reasonably selected from the multiple LEDs deployed in the room as transmitted nodes to provide position coordinates, and then the improved trilateration method is used to obtain the target location information. MLED-RSS positioning algorithm can effectively solve the block or shadow effect existing in indoor visible location. Simulation results show that the MLED-RSS positioning algorithm can achieve high localization accuracy. -
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