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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

A PREDICTABLE PERFORMANCE WIDEBAND NOISE GENERATOR

Napier, T. M., Peloso, R.A. 11 1900 (has links)
International Telemetering Conference Proceedings / October 29-November 02, 1990 / Riviera Hotel and Convention Center, Las Vegas, Nevada / An innovative digital approach to analog noise synthesis is described. This method can be used to test bit synchronizers and other communications equipment over a wide range of data rates. A generator has been built which has a constant RMS output voltage and a well-defined, closely Gaussian amplitude distribution. Its frequency spectrum is flat within 0.3 dB from dc to an upper limit which can be varied from 1 Hz to over 100 MHz. Both simulation and practical measurement have confirmed that this generator can verify the performance of bit synchronizers with respect to the standard error rate curve.
2

HARDWARE DOWNLOADABLE MULTI-FUNCTION TELEMETRY INPUT MODULE

Nicolais, Ray, Nicolo, Stephen J., Snyder, Ed 10 1900 (has links)
International Telemetering Conference Proceedings / October 23-26, 2000 / Town & Country Hotel and Conference Center, San Diego, California / This paper describes a Multi-Function Telemetry Input Module (TIM). The TIM module includes a 30 Mbps PCM frame synchronizer, a time code translator/generator, a PCM simulator and a tunable bit synchronizer all on a single PCI card. The module uses a generic architecture including: high density Field Programmable Gate Arrays (FPGAs), look-up table memory, dual port A/B data buffer memory and a full function PCI interface. The FPGA and the logic function of the card are downloadable via the PCI interface. This allows a single module to support many hardware functions in a telemetry front-end. The TIM is an integral part of a PC-based Advanced Telemetry Processing and Display System. This concept for hardware design ushers in a new generation of flexible downloadable telemetry products.
3

IMPLEMENTATION OF UNMANNED TELEMETRY GROUND SYSTEM USING MICROWAVE LINK

Dong-soo, Seo, Sung-hoon, Jang, Sung-hee, Han, Heung-bum, Kim 10 1900 (has links)
International Telemetering Conference Proceedings / October 20-23, 2003 / Riviera Hotel and Convention Center, Las Vegas, Nevada / Unmanned Telemetry Ground System (UTGS) was implemented in Defense System Test Center (DSTC), Agency for Defense Development (ADD). The components of UTGS are Antenna, NPS (Network Power Switch), RCB (Receiver/Combiner/Bit synchronizer) and microwave link. We have installed RCB which is composed of receiver, combiner and bit synchronizer. RCB can be controlled and monitored by RS232 serial communication and microwave network. NPS controls its power supplies. UTGS sends PCM stream to local site using E1-class HDSL and microwave link. This system is possible the signal acquisition and reduction of man power at remote site. The usability and performance of UTGS was proved in flight tests. This paper describes the hardware, software design and an implementation of UTGS.

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