认知无线电网络中频谱检测过程中检测概率随信噪比的关系-In CR networks,the relation between SNR level and detection probability

认知无线电网络中，当信噪比不同时检测概率随虚警概率的变化曲线。-In Cognitive radio network,when the SNR is not the same, the change curve between the detection probability and the false alarm probability.

在信噪比不断变化，给出虚警概率的前提下，当给定一信噪比值后，检测概率的变化情况。-Signal-to-noise ratio changing, given the premise of the probability of false alarm, when given a signal-to-noise ratio values, the probability of detection of changes.

给定一特定信噪比，检测单节点在这一信噪比的虚警概率随检测概率的变化仿真曲线图。-Given a specific signal-to-noise ratio, the detection of a single node in the signal-to-noise ratio of the probability of false alarm detection probability changes with the simulation graph.

本论文包含5个源程序，分别为LSBCut、LSBCollage、DCTCut、DCTCollage和PSNR，其中LSBCut实现了LSB水印算法的剪切篡改的检测、LSBCollage实现了LSB水印算法的拼贴篡改的检测、DCTCut实现了DCT水印算法的剪切篡改的检测、DCTCollage实现了DCT水印算法的拼贴篡改的检测、PSNR功能是计算嵌入水印嵌入的峰值信噪比，以此来说明嵌入水印后图像载体的失真大小。LSBCut、LSBCollage、DCTCut、DCTCollage是独立的程序，每