【摘要】：提出了一種基于頻域加權的均方誤差(MSE)感知失真度量方法以評價變換域重疊隱蔽通信系統(tǒng)的隱蔽性能。該方法針對Q因子度量方法應用于變換域重疊隱蔽通信的局限,根據(jù)變換域通信系統(tǒng)的基本原理,將信號的感知失真從時域轉(zhuǎn)到頻域進行度量,根據(jù)不同宿主信號頻譜幅值對于疊加的隱蔽信號的感知失真程度不同,以宿主信號頻譜幅值的倒數(shù)為加權因子,分別對宿主信號各頻點的感知失真做加權求和,從而得到系統(tǒng)的感知失真度量結果。仿真結果表明,該方法不僅可以提高系統(tǒng)感知失真能力,與重疊隱蔽通信的基本機理保持一致,符合實際感知效果,而且還統(tǒng)一了系統(tǒng)感知能力與抗干擾能力,可以為隱蔽系統(tǒng)的設計提供有效參考。
[Abstract]:A mean square error (MSE) perceptual distortion measurement method based on frequency domain weighting is proposed to evaluate the covert performance of overlapping covert communication systems in transform domain. In view of the limitation of Q-factor measurement method applied to overlapping covert communication in transform domain, according to the basic principle of communication system in transform domain, the perceptual distortion of signal is transferred from time domain to frequency domain to measure. According to the different sensitivity distortion degree of different host signal spectrum amplitude to the superimposed hidden signal, taking the reciprocal of host signal spectrum amplitude as the weighting factor, the sense distortion of each frequency point of host signal is weighted sum respectively. Thus, the perceptual distortion measurement results of the system are obtained. The simulation results show that the proposed method can not only improve the perceptual distortion ability of the system, keep consistent with the basic mechanism of overlapping covert communication, but also unify the perceptual ability and anti-jamming ability of the system. It can provide an effective reference for the design of covert system.
【作者單位】： 空軍工程大學信息與導航學院;中國人民解放軍94900部隊;
【基金】：國家自然科學基金(60972042,61271250,61202490) 空軍工程大學信息與導航學院研究生論文創(chuàng)新基金(2011004)資助項目
【分類號】：TN914

【參考文獻】

相關期刊論文 前2條

1 王穎慧;劉萬軍;;基于MSB和HVS的空域信息隱藏算法的研究[J];計算機科學;2012年09期

2 馬秀瑩;林家駿;;信息隱藏性能評價方法[J];中國圖象圖形學報;2011年02期

【共引文獻】

相關期刊論文 前10條

1 聶道聰;鄭洪源;;一種使用四叉樹分割的分形信息隱藏算法[J];計算機應用與軟件;2015年02期

2 方蒙蒙;何加銘;史智慧;;基于視覺掩蔽的隱寫不可感知性評價方法[J];計算機工程;2014年09期

3 馬秀瑩;;基于圖像的隱寫算法性能評價體系研究[J];計算機工程與設計;2014年05期

4 謝鐵城;達新;褚振勇;張衡陽;王舒;;變換域重疊隱蔽通信系統(tǒng)的隱蔽性度量方法[J];高技術通訊;2014年05期

5 謝建全;謝R，

本文編號：2465882