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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
31

Frequency modulated pulse for ultrasonic B-scan imaging in attenuating medium /

Mehra, Sumat. January 1991 (has links)
Thesis (M.S.)--Rochester Institute of Technology, 1991. / Includes bibliographical references (leaves 132-138).
32

Reduction of power supply EMI emission by switching frequency modulation /

Lin, Feng, January 1992 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1992. / Vita. Abstract. Includes bibliographical references (leaves 66-67). Also available via the Internet.
33

Digital frequency demodulation for a laser vibrometer /

Cronin, Christopher Joseph. January 1994 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1994. / Vita. Abstract. Includes bibliographical references (leaf 75). Also available via the Internet.
34

A hybrid modulation for the VHF aeronautical channels

Akos, Dennis M. January 1992 (has links)
Thesis (M.S.)--Ohio University, November, 1992. / Title from PDF t.p.
35

Measurements and models of radio frequency impulsive noise inside buildings /

Blackard, Kenneth Lee, January 1991 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1991. / Vita. Abstract. Includes bibliographical references (leaves 140-141). Also available via the Internet.
36

Analysis of the probability of error in frequency hopping multiple access system /

Shin, Hong-Sup. January 1997 (has links)
Thesis (Ph. D.)--University of Washington, 1997. / Vita. Includes bibliographical references (leaves [116]-119).
37

The behavior of high voltage vacuum gaps under the influence of radio frequency fields

Kustom, Robert L. January 1969 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1969. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
38

Signal detection and enhancement of infrasound events

Schuette, Mark Louis January 2011 (has links)
Typescript (photocopy). / Digitized by Kansas Correctional Industries
39

THE APPLICATION OF DIGITAL DEMODULATION TECHNIQUE FOR FREQUENCY MODULATION SIGNAL IN TELEMETRY RECEIVER

Peng, Song, XiaoLin, Zhang, Xue, Cao, Xia, Qi 10 1900 (has links)
International Telemetering Conference Proceedings / October 18-21, 2004 / Town & Country Resort, San Diego, California / Combined with an example of digital telemetry receiver design, this paper mainly discusses the application of software radio in telemetry receiver. The paper begins with an introduction of applying high efficiency digital filter and math analysis in quadrature digital frequency modulation and demodulation to digital frequency conversion technique. Next, Simulink/Matlab is used to simulate digital telemetry receiver. The method of simulation, analysis and calculation of performance and result of simulation are all available. In the end, the paper discusses digital telemetry receiver design and implement by making use of software radio technique, the circuits apply HSP50214 chip of Intersil Co., CPLD implements of Altera Co. and PC Bus. The sample is an expansion card for personal computer. Result of test, performance of the receiver and conclusion are given out, which show fine performance of receiver and can be apply to practice. The lever of this technology has reached first class in the world.
40

Digital FDM for the HSTSS DAC Program

Doerr, Michael B., Hallidy, William H., Jr.,, McMillian, Gary B., Burke, Lawrence W., Jr., Faust, Jonah N. 10 1900 (has links)
International Telemetering Conference Proceedings / October 25-28, 1999 / Riviera Hotel and Convention Center, Las Vegas, Nevada / This paper presents the design of an innovative approach to Frequency Division Multiplexing (FDM) for the STRICOM Hardened Subminiature Telemetry and Sensor System (HSTSS) Data Acquisition Chipset (DAC) program. An ASIC (Application Specific Integrated Circuit) is being developed by Systems & Processes Engineering Corporation (SPEC) that implements this new digital FDM approach for telemetry applications. The FDM ASIC provides six channels that are IRIG-106 compatible, and may be used in conjunction with a Delay/Repeater ASIC. Together these ASICs make a complete instrumentation system for those applications requiring very small size, simplicity of use, and low cost, e.g. munitions/armament testing.

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