Abstract
radar system using a c.w. microwave noise spectrum from an impatt oscillator as the transmitted signal has useful performance. in this seminar application of a digital correlator to measure, essentially in real time, the autocorrelation function of the noise spectrum and provide a radar display of targets at ranges of up to at least 1 km is now described. ....etc

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detailed working of a DIGITAL NOCTURNAL NUISANCE using logic gates ....etc

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Digital-to-Analog Analog-to-Digital
Data Handling Systems
Both data about the physical world and control signals sent to interact with the physical world are typically analog or continuously varying quantities.
In order to use the power of digital electronics, one must convert from analog to digital form on the experimental measurement end and convert from digital to analog form on the control or output end of a laboratory system.
Digital-to-Analog Conversion
When data is in binary form, the 0's and 1's may be of s ....etc

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Abstract:
Due to the threat of terrorism, today's enemy can be anyone and they can exist anywhere even in populated cities. Monitoring human activities in an urban environment is a difficult problem due walls, clutter, and other obstructions. This seminar discusses the development of a network of digital noise radars that operate simultaneously to track humans and non-human targets inside rooms and through walls. Each individual noise radar works by cross correlating the received signal with a time delayed replica of the transmit signal. A hi ....etc

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A/D and D/A Conversion,analog to digital and digital to analog


Data Converter impacts the factor for the performance of the overall radio design
Requirements: very high sampling rates, high number of effective quantization bits, an operating bandwidth of several Ghz, a large spurious-free dynamic range, a reasonable price
DAC and ADC converters
Sampling and Quantization
Nyquist Zones
Aliasing
Bandpass filtering – uses image to translate bandpass signals to baseband
Errors occurs in Quantization
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Abstract:

Digital audio broadcasting, DAB, is the most fundamental advancement in radio technology since that introduction of FM stereo radio. It gives listeners interference - free reception of CD quality sound, easy to use radios, and the potential for wider listening choice through many additional stations and services.

DAB is a reliable multi service digital broadcasting system for reception by mobile, portable and fixed receivers with a simple, non-directional antenna. It can be operated at any frequency from 30 MHz ....etc

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APPLICATIONS OF DIGITAL OBJECT COUNTER USING LDR & IC 555 MONOSTABLE MULTIVIBRATOR ....etc

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hi....we want the project abstract of lcd based digital alarm clock with digital thermometer using 8051/89c51........ ....etc

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i need the full seminar report of the topic.as early as possible

by
hari


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pls send me the ppt on Analog-Digital Hybrid Modulation for Improved Efficiency over Broadband Wireless Systems ....etc

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