基于緩沖占用比無(wú)人機視頻自適應傳輸算法

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基于緩沖占用比無(wú)人機視頻自適應傳輸算法
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作者單位:(1. 解放軍理工大學(xué) 氣象海洋學(xué)院,南京 211101;2. 總參作戰部 氣象水文局,北京 100081)
作者簡(jiǎn)介:王 敏(1983-),女,陜西咸陽(yáng)人,碩士,講師,主要從事圖像傳輸與圖像處理方向的研究。
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基金項目:國家自然科學(xué)基金(41301370) 。

A New Adaptive Wireless Transmission Algorithm of UAV Video Based on Buffer Occupancy

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(1.Institute of Meteorology and Oceanography, PLA University of Science and Technology, Nanjing 211101, China; ;2.MET-HYD Bureau of General Staff Battle Department, Beijing 100081, China)

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摘要:

針對目前基于發(fā)送速率的自適應視頻傳輸算法不能有效利用和適應網(wǎng)絡(luò )傳輸,提出了利用數據緩沖占用比的無(wú)人機載視頻自適應無(wú)線(xiàn)傳輸方法；通過(guò)計算發(fā)送緩存內的數據占空比的變化判斷網(wǎng)絡(luò )發(fā)送能力,進(jìn)而調節下次采集的視頻幀率,或在調節下次采集視頻幀率之前調整壓縮編碼率,由此自適應的設置最大化傳輸速率；相對于傳統基于線(xiàn)性增加發(fā)送速率的方法,文章算法根據數據占空比自動(dòng)調節發(fā)送速率和編碼率,使平均發(fā)送速率提高了0.25 Mbit/s,帶寬利用率提高了8%,實(shí)現了在不同網(wǎng)絡(luò )狀況下發(fā)送速率和編碼率的自適應最大化,通過(guò)有效利用網(wǎng)絡(luò )傳輸,提高視頻數據傳輸的實(shí)時(shí)性、可靠性和完整性。

Abstract:

According to the problem that the network traffic status is not effective in the adaptive video transmission algorithm based on transmission speed, a new adaptive wireless transmission algorithm of UAV video based on the buffer occupancy is proposed. By calculating the buffer occupancy of the transmit buffer to judge the ability of network transmission, the next acquisition rate is adjust, or the compression code rate before adjusting the next acquisition rate is adjust, the maximum transmission rate is set to maximum.Compared with the linear method to increase the transmission rate based on the traditional algorithm, the sending rate and code rate is adjusted based on the duty ratio in this algorithm, the average sending rate increased 0.25 Mbit/s, bandwidth utilizationrate increased by 8%,the maximize the data transmission and coding is realized in the network under the different network, the utilize the transmission status of the network is effectively, so as to ensure the real-time, reliability and data integrity of the video data transmission.

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王敏,周樹(shù)道,李濟生,文滋木.基于緩沖占用比無(wú)人機視頻自適應傳輸算法計算機測量與控制[J].,2015,23(8):2828-2829, 2833.

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收稿日期:2014-10-28
最后修改日期:2014-12-06
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在線(xiàn)發(fā)布日期: 2015-10-08
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