In this paper, a spread spectrum digital watermark based on Gaussian pyramid decomposition was proposed.

提出了一种基于高斯金字塔分解的数字图像扩频水印技术。

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This paper introduces an AFC algorithm for a zero-intermediate frequency direct-sequence spread spectrum digital receiver.

为了使得射频源和波导管的频率保持一致 ，采用了自动频率控制系统 （AFC）。

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Based on the analysis of image fusion technology at present, a kind of real-time dual-spectrum digital image fusion system is designed.

通过分析目前的图像融合技术，设计了一种实时双光谱数字图像融合系统。

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Says the analyst: "Dolan is probably hoping that Ergen will want to use that spectrum for high digital television, " a technology that's expected to gain steam in the near future.

FORBES

Economides said the agency had the opportunity to make the wrong choice back in the 1990s, when cellular carriers were bidding on spectrum for new digital systems and had to decide among the GSM, TDMA and CDMA standards.

FORBES: Liberty Media Unit Says Standards Manipulated By Competitors

The industry spent much of that time fighting over a plan to move FM and AM to a new spectrum band to accommodate digital.

FORBES: Big Audio Dynamite