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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.
1

SPECIFYING A PCMCIA IRIG-106 (Ch. 4) DECOMMUTATOR

Mc Girr, Niall 10 1900 (has links)
International Telemetering Conference Proceedings / October 21, 2002 / Town & Country Hotel and Conference Center, San Diego, California / There are many applications where an ultra-compact PC (palm-top) is required for quick analysis of PCM data. There are many design issues associated with the design of a PC-Card (PCMCIA) decommutator. • Is it possible to connect a 20Mbps PCM stream? • What outputs are required from such a card? • How many cards can be used? • Which mode to use (memory or I/O) • How to program such a card • How to develop third-party software for analysis of data This paper discusses some of these issues and the applications for such a card.
2

A PCMCIA BASED TELEMETRY AND ACQUISITION SYSTEM

Gross, Jeffrey, Keller, G. E. 10 1900 (has links)
International Telemetering Conference Proceedings / October 27-30, 1997 / Riviera Hotel and Convention Center, Las Vegas, Nevada / In this paper, the Miniature Data Acquisition Transceiver System (Mini-DAT), a Type II PC-Card based data acquisition and transceiver system is described. The Mini-DAT was developed by ViaSat and is currently in use at the Air Force Research Lab (AFRL) at Eglin AFB. AFRL is investigating the use of this Industrial, Scientific and Medical (ISM) band system for data collection with advanced munitions. The Mini-DAT combines the advantages of PC-Card technology with an off the shelf interfacing and packaging approach to provide a large array of capabilities in a very small package. The system provides everything needed to collect analog, discrete and digital data, process the data and transfer the data in a wireless fashion using the latest license free spread spectrum modulation technology. The advanced design of the Mini-DAT allows for operation in harsh remote environments, collecting data unattended and accessed remotely. A graphical user interface (GUI) is provided via a Windows 3.x and 95 software package that can be easily customized for specific applications. The Mini-DAT provides fast and reliable error-free data transfer over the 2.4GHz ISM communication band. It operates over a shared 80MHz bandwidth, allowing multiple access of a number of portable units operating simultaneously in the same band.
3

Design of a Compact Flash Module

Jafari Harandi, Arash January 2004 (has links)
<p>The combination of the existing mobile system and the IEEE standard for WLAN makes way for development of the 4th generation mobile systems. Access for laptop-users to WLAN is today a reality giving a taste of that new generation. Designing a product that introduces WLAN networking for handheld computers would be a major step in the development spoken of. Accommodating existing WLAN PC Card for laptops to handheld PDAs gives a short time to market. Therefore a product prototype for a compact flash module was designed and manufactured to make way for the 4th generation indoor networking facilities on the market.</p>
4

Design of a Compact Flash Module

Jafari Harandi, Arash January 2004 (has links)
The combination of the existing mobile system and the IEEE standard for WLAN makes way for development of the 4th generation mobile systems. Access for laptop-users to WLAN is today a reality giving a taste of that new generation. Designing a product that introduces WLAN networking for handheld computers would be a major step in the development spoken of. Accommodating existing WLAN PC Card for laptops to handheld PDAs gives a short time to market. Therefore a product prototype for a compact flash module was designed and manufactured to make way for the 4th generation indoor networking facilities on the market.
5

Design of a 32-bit CardBus PC-Card based System Test Platform for the SoCTRix Wireless LAN Transceiver / Design av en 32-bitars CardBus PC-Card baserad System Test Platform för SoCTRix Wireless LAN Transceivern

Eriksson, Bo January 2004 (has links)
<p>Today, wireless communications is used more then ever before. Wired systems are replaced with wireless versions. New methods and transmission standards are developed and tested. The purpose of this thesis is development of a flexible high-performance System Test Platformfor test of the SoCTRix Wireless LAN Transceiver. </p><p>The result is a Xilinx Virtex-II FPGA based System Test Platform board with CardBus PC Card interface to a computer. The hardware achieved has the following features:</p><p>- 8-layer PCB</p><p>- PCMCIA CardBus PC Card interface, enabling 133 MB/s data throughput</p><p>- 1M Gate Virtex-II FPGA with reprogrammable configuration memory</p><p>- Debugging via LEDs and Logic Analyzer connectors</p><p>- 2x SPI EEPROM</p><p>- 40 MHz system clock</p><p>- Easy connection of two daughter-boards</p><p>Specially designed for wireless transmitter development, can also be used for other computer related highperformance applications.</p>
6

Design of a 32-bit CardBus PC-Card based System Test Platform for the SoCTRix Wireless LAN Transceiver / Design av en 32-bitars CardBus PC-Card baserad System Test Platform för SoCTRix Wireless LAN Transceivern

Eriksson, Bo January 2004 (has links)
Today, wireless communications is used more then ever before. Wired systems are replaced with wireless versions. New methods and transmission standards are developed and tested. The purpose of this thesis is development of a flexible high-performance System Test Platformfor test of the SoCTRix Wireless LAN Transceiver. The result is a Xilinx Virtex-II FPGA based System Test Platform board with CardBus PC Card interface to a computer. The hardware achieved has the following features: - 8-layer PCB - PCMCIA CardBus PC Card interface, enabling 133 MB/s data throughput - 1M Gate Virtex-II FPGA with reprogrammable configuration memory - Debugging via LEDs and Logic Analyzer connectors - 2x SPI EEPROM - 40 MHz system clock - Easy connection of two daughter-boards Specially designed for wireless transmitter development, can also be used for other computer related highperformance applications.
7

LOW-COST MISSION SUPPORT CONCEPT

Lam, Barbara 10 1900 (has links)
International Telemetering Conference Proceedings / October 28-31, 1996 / Town and Country Hotel and Convention Center, San Diego, California / This paper presents a new architecture of the end-to-end ground system to reduce overall mission support costs. The present ground system of the Jet Propulsion Laboratory (JPL) is costly to operate, maintain, deploy, reproduce, and document. In the present climate of shrinking NASA budgets, this proposed architecture takes on added importance as it will dramatically reduce all of the above costs. Currently, the ground support functions (i.e., receiver, tracking, ranging, telemetry, command, monitor and control) are distributed among several subsystems that are housed in individual rack-mounted chassis. These subsystems can be integrated into one portable laptop system using established MultiChip Module (MCM) packaging technology. The large scale integration of subsystems into a small portable system will greatly reduce operations, maintenance and reproduction costs. Several of the subsystems can be implemented using Commercial Off-The-Shelf (COTS) products further decreasing non-recurring engineering costs. The inherent portability of the system will open up new ways for using the ground system at the “point-of-use” site as opposed to maintaining several large centralized stations. This eliminates the propagation delay of the data to the Principal Investigator (PI), enabling the capture of data in real-time and performing multiple tasks concurrently from any location in the world. Sample applications are to use the portable ground system in remote areas or mobile vessels for real-time correlation of satellite data with earth-bound instruments; thus, allowing near real-time feedback and control of scientific instruments. This end-to-end portable ground system will undoubtedly create opportunities for better scientific observation and data acquisition.
8

Real-time data acquisition and processing of the Magnetic, Angular Rate and Gravity (MARG) sensor

Saliaris, Ioannis R. 06 1900 (has links)
Approved for public release, distribution is unlimited / This research involves the development of a human-body motion tracking system constructed with the use of commercial off-the-shelf (COTS) compo-nents. The problem to be solved is that the data from the motion tracking sensors must be transmitted wirelessly in real time from a microcontroller to a server computer. Due to the fact that the microcontroller does not support a standard OS, widely used PCMCIA cards or USB wireless modules cannot be used. The wireless communication module chosen for this purpose is the DPAC airborne, a highly integrated 802.11b module that can be easily integrated with the microcon-troller. The evaluation of the module was completed in four stages. The first part was to initiate communication with the DPAC module. The second part was to establish communication between the DPAC module and a TCP server. The third part was to establish communication between the microcontroller and the DPAC module. The fourth part was to increase the baud-rate to the desired high value of 230,400 bps. The evaluation result indicates that the DPAC airborne module meets the wireless communication requirements of the motion tracking system. / Lieutenant, Hellenic Navy

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