A novel subsampling based robust image watermarking scheme was proposed.

提出了一种新的基于子采样的图像数字水印算法。

A receiver architecture is presented that utilizes the subsampling concept to down-convert the IF signal to a lower IF before been digitized.

提出了一个欠采样中频收发器的体系结构，它在中频数字化以前先通过欠采样将中频频率变到一个较低的频率。

Then the author mentioned that the incomplete subsampling is one of reliability preprocessing methods, it includes instantaneous failure, data induction and Johnson method, etc.

不完全子样法是可靠性预处理的一种方法，包括瞬间故障率法、数据归定法、约翰逊法等。

The traditional subsampling based information hiding algorithm can not resist the permutation attack. In this paper, an improved algorithm is proposed to resist the permutation attack.

以往的基于子采样的信息隐藏算法无法抵抗置乱攻击，本文提出了一个改进算法，实验表明该算法能有效抵抗置乱攻击。

Based on the remainder theorem and direct dechirp operation, an algorithm for estimation of chirp rate and initial frequency of the subsampling wideband LFM signal unambiguously is presented.

基于中国余数定理解频率模糊和解线调方法，提出一种无模糊欠采样的宽带线性调频信号的调频斜率和初始频率的估计算法。