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Hårdvarubaserade SOQPSK-algoritmer : En VHDL-implementation av algoritmer för att modulera & demodulera SOQPSK-signalerWahlgren, Max, Forsberg, Daniel January 2008 (has links)
Beroende på i vilken miljö man har tänkt att använda trådlös kommunikation behöver man hitta en modulationsteknik som passar under rådande förhållanden. I början på 1980-talet utvecklade den Amerikanska militären en modulationsteknik som kallas för Shaped BPSK (SBPSK) avsedd att tillämpas i kommunikationslänkar med satelliter. Vidareutveckling av SBPSK ledde sedan fram till en förbättrad variant kallad Shaped Offset QPSK (SOQPSK). På senare år har denna modulationsteknik börjat användas i civila tillämpningar och vidareutvecklats ytterligare för att ge den än bättre prestanda. År 2004 antogs SOQPSK som en modulationsteknik i den internationella flygplanskommunikationsstandarden, IRIG-106. Versionen av SOQPSK som antogs i IRIG-106 har flera bra egenskaper som t. ex. dess spektraltäthet. Detta gör denna typ av modulationsteknik lämpad för kommunikationslänkar med bl.a. flygplan, satelliter och rymdsonder (‘deep-space’). Målet med examensarbetet har varit att implementera algoritmer för att skicka och ta emot SOQPSK-modulerade signaler. Dessa algoritmer skulle utvecklas i VHDL för att sedan syntetiseras och programmera en FPGA. Uppgiften har givits av Syncore Technologies AB i Linköping. Arbetet har resulterat i fungerande implementationer både i mjukvara och hårdvara. Hårdvarulösningen är verifierad att klara bithastiheter upp till 30 Mbit/s. Teoretisk information om allmän modulering/demodulering och specifikt kring SOQPSK behandlas i rapporten. Uppbyggnaden av en teoretisk sändar- och mottagarmodell utformad för SOQPSK-kommunikation beskrivs också i rapporten för att ge en bättre helhetsbild av implementationen som utförts. Arbetets syfte är att ligga till grund för Syncore AB som utvecklar en kom- munikationslänk med SOQPSK-kompatibilitet.
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A HIGH-SPEED, RUGGEDIZED, MINIATURE INSTRUMENTATION RECORDER UTILIZING COMMERCIAL TECHNOLOGYRicker, William, Kolb, John Jr 10 1900 (has links)
International Telemetering Conference Proceedings / October 26-29, 1992 / Town and Country Hotel and Convention Center, San Diego, California / Due to the vast amount of data required to be collected for design/performance analysis of
operational and development systems, there has evolved a real requirement for a
high-speed, large capacity, data collection/record system in a small Flight/Ruggedized
package. This need is realized by several user communities and factors which include the
evolution of small operational vehicles (airborne, land and UAV’s), the desire of weapons
manufacturers/integrators to be independent from the vehicle during vehicle integration,
and a general need for a field/airborne, reliable portable data collection system for
intelligence gathering, operational performance verification and on-board data processing.
In the Air Defence community, the need for a ruggedized record system was highlighted
after Desert Storm, in which the operational performance of the Patriot Missile was
questioned and data collection was not performed to support the performance. The Aydin
Vector Division in conjunction with the prime contractor, has come up with a solution to
this problem which utilizes a commercially available helical scan 8mm data storage unit.
This solution provides a highly reliable record system, ruggedized for airborne and field
environments and a low price in comparison with the more traditional approaches currently
offered.
This paper will describe the design implementation of this small ruggedized, flight worthy
Data collection system deemed the ATD-800. It will also discuss the performance and
limitations of implementing such a system, as well as provide several applications and
solutions to different operational environments to be encountered. Additionally, the paper
will conclude with several product enhancements which may benefit the flight test,
operational and intelligence communities in the future.
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REDUCTION AND ANALYSIS PROGRAM FOR TELEMETRY RECORDINGS (RAPTR): ANALYSIS AND DECOMMUTATION SOFTWARE FOR IRIG 106 CHAPTER 10 DATAKim, Jeong Min 10 1900 (has links)
ITC/USA 2005 Conference Proceedings / The Forty-First Annual International Telemetering Conference and Technical Exhibition / October 24-27, 2005 / Riviera Hotel & Convention Center, Las Vegas, Nevada / Solid State On-Board Recording is becoming a revolutionary way of recording airborne telemetry data and IRIG 106 Chapter 10 “Solid State On-Board Recorder Standard” provides interface documentation for solid state digital data acquisition. The Reduction and Analysis Program for Telemetry Recordings (RAPTR) is a standardized and extensible software application developed by the 96th Communications Group, Test and Analysis Division, at Eglin AFB, and provides a data reduction capability for disk files in Chapter 10 format. This paper provides the system description and software architecture of RAPTR and presents the 96th Communication Group’s total solution for Chapter 10 telemetry data reduction.
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Data Flow and Remote Control in the Telemetry Network SystemLaird, Daniel T., Morgan, Jon 10 1900 (has links)
ITC/USA 2009 Conference Proceedings / The Forty-Fifth Annual International Telemetering Conference and Technical Exhibition / October 26-29, 2009 / Riviera Hotel & Convention Center, Las Vegas, Nevada / The Central Test and Evaluation Investment Program (CTEIP) Integrated Network Enhanced Telemetry (iNET) program is currently developing new standards for wired-wireless local area networking (LAN-WLAN) using the Internet Protocol (IP), for use in telemetry (TM) channels, under the umbrella of the Telemetry Network System (TmNS). Some advantages of TmNS are real-time command and control of instrumentation, quick-look acquisition, data retransmission and recovery ('gapless TM' or 'PCM backfill'), data segmentation, etc. The iNET team is developing and evaluating prototypes, based on commercial 802.x and other technologies, in conjunction with Range Commander's Council (RCC) Inter-Range Instrumentation Group (IRIG) standards and standards developed under the iNET program.
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INSTRUMENTATION OF OPERATIONAL BOMBER AIRCRAFTAbbott, Laird 10 1900 (has links)
International Telemetering Conference Proceedings / October 26-29, 1998 / Town & Country Resort Hotel and Convention Center, San Diego, California / Airborne instrumentation used during flight tests is being installed and maintained in a
unique way by operational bomber testers from the Air Force’s 53d Wing. The ability of
the flight test community to test on operational aircraft has always been somewhat
curtailed by the need for advanced forms of instrumentation. Operational fighter flight
test squadrons have aircraft assigned to them, which they modify on as needed basis,
much the same as developmental testers. However, bomber operational test units must
use operational aircraft to accomplish their mission as there are no bombers in the Air
Force’s Air Combat Command (ACC) specifically set aside for operational tests. During
test missions, these units borrow aircraft from operational bomb wings, and then return
them to service with the bomb wing after testing is complete. Yet, the requirement for
instrumentation on these test missions is not much different than that of developmental
testers. The weapon system engineer’s typically require Mil-Std-1553, video, telemetry,
and Global Positioning System (GPS) Time-Space-Position-Information airborne
receiver recordings. In addition, this data must be synchronized with an IRIG-B time
code source, and recorded with the same precision as the data gathered during
development test and evaluation (DT&E). As a result, several techniques have been
developed, and instrumentation systems designed for these operational test units to
incorporate instrumentation on operational aircraft.
Several factors hamper the usual modification process in place at bases such as Edwards
AFB and Eglin AFB. Primary among these is the requirement to maintain the aircraft in
an operational configuration, and still meet all of the modification design safety criteria
placed on the design team by the aircraft’s single manager. Secondary to the list of
restrictions is modification time. Aircraft resources are stretched quite thin when one
considers all of the bomb wing’s operational commitments. When they must release an
aircraft for test missions, the testers must insure that schedule impacts are minimal.
Therefore, these systems must install and de-install within one to two days and be
completely portable. Placing holes in existing structures or adding new permanent
structure is unacceptable. In addition, these aircraft must be capable of returning to
combat ready status at any time. This paper centers on the B-52 bomber, and the active aircraft temporary modifications
under control of the 49th Test Squadron (49 TESTS) at Barksdale AFB in Louisiana. The
B-52 presents unique design challenges all its own, in addition to the general restrictions
already mentioned. This paper will present the options that the 49 TESTS has
successfully used to overcome the aforementioned restrictions, and provide an
appropriate level of specialized instrumentation for its data collection requirements.
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The Western Aeronautical Test Range Chapter 10 ToolsKnudtson, Kevin, Park, Alice, Downing, Bob, Sheldon, Jack, Harvey, Robert, Norcross, April 10 1900 (has links)
ITC/USA 2011 Conference Proceedings / The Forty-Seventh Annual International Telemetering Conference and Technical Exhibition / October 24-27, 2011 / Bally's Las Vegas, Las Vegas, Nevada / The Western Aeronautical Test Range (WATR) staff at the NASA Dryden Flight Research Center is developing a translation software called Chapter 10 Tools in response to challenges posed by post-flight processing data files originating from various on-board digital recorders that follow the Range Commanders Council Inter-Range Instrumentation Group (IRIG) 106 Chapter 10 Digital Recording Standard but use differing interpretations of the Standard. The software will read the date files regardless of the vendor implementation of the source recorder, displaying data, identifying and correcting errors, and producing a data file that can be successfully processed post-flight.
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DIGITAL VOICE DECODING IN TODAY'S TELEMETRY SYSTEMKnudtson, Kevin M., Glass, Randy 10 1900 (has links)
International Telemetering Conference Proceedings / October 25-28, 1999 / Riviera Hotel and Convention Center, Las Vegas, Nevada / Today’s telemetry systems can reduce spectrum demand and maintain secure voice
by encoding analog voice into digital data using; Continuously Variable Slope Delta
Modulation ( CVSD ) format and imbedding it into a telemetry stream. The model CSC-0390 DvD system is an excellent choice in decoding digital voice, designed with
flexibility, efficiency, and simplicity in mind. Flexibility in design brings forth a
capability of operating on a wide variety of telemetry systems and data formats without
any specialized interfaces. The utilization of 74HC series circuit technology makes this
DvD system efficient in design, low cost, and lower power consumption. In addition the
front panel display and control function is also is an example of Simplicity in design and
operation.
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REAL-TIME INTEGRATION OF RADAR INFORMATION, AND GROUND AND RADIOSONDE METEOROLOGY WITH FLIGHT RESEARCH DATABillings, Don, Wei, Mei, Leung, Joseph, Aoyagi, Michio, Shigemoto, Fred, Honeyman, Rob 10 1900 (has links)
International Telemetering Conference Proceedings / October 26-29, 1998 / Town & Country Resort Hotel and Convention Center, San Diego, California / Although PCM/TDM framed data is one of the most prevalent formats handled by flight
test ranges, it is often required to acquire and process other types. Examples of such non-standard
data types are radar position information and meteorological data from both
ground based and radiosonde systems. To facilitate the process and management of such
non-standard data types, a micro-processor based system was developed to acquire and
transform them into a standard PCM/TDM data frame. This obviated the expense of
developing additional special software and hardware to handle such non-standard data
types.
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