International Telemetering Conference Proceedings / October 22-25, 2001 / Riviera Hotel and Convention Center, Las Vegas, Nevada / The objective of any data acquisition system is to make accurate measurements of physical phenomena. Many of the phenomena to be characterized contain data that is in the audio-frequency range between 0 and 50,000 Hertz. Examples include structural vibration, wind-tunnel measurements, turbine engines and acoustics in air and water. These tests often require a large number of channels and may be very expensive. In some cases, there may be only one opportunity to acquire the data. This paper describes a testing/measurement philosophy and the use of advances in available hardware/software systems to implement the requirements. Primary emphasis is on robustness (assurance that critical data is properly recorded), measurement/characterization of unexpected results (generated by accidents or unexpected behavior), and test safety (for both the test article and the facility). Finally, a data acquisition system that encompasses the features discussed is described.

No description available.

MSc, PU vir CHO, 1993

MSc, PU vir CHO, 1993

<p> The feasibility of using a partial response-encoded single-sideband (SSB) modulated signal for transmission of digital data in a radio system is considered. The principal methods of SSB signal generation and demodulation are examined, and the effects of carrier synchronization are determined. The effect of steady-state carrier phase errors on the error rate of an SSB partial response receiver is analyzed theoretically and by means of computer simulation. The analysis of a decision-directed SSB carrier phase tracking loop is presented and its performance is evaluated using computer simulation. The performance of the SSB partial response system after amplification by means of travelling-wave-tube (TWT) amplifiers is analyzed by using computer simulation. Finally, a comparison of an SSB partial response system and a quadrature partial response system (QPRS) is made.</p> / Thesis / Master of Engineering (MEngr)

No description available.

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 / The Telemetry Group (TG) of the Range Commanders Council (RCC) developed the Chapter 10 addition to the IRIG 106 standard to “establish a common interface standard for the implementation of solid-state digital data acquisition and on-board recording systems” ([1]). This standard is intended to allow the development of a common set of data playback/reduction software, minimizing the need for a large number of unique programs to handle proprietary data structures. This paper analyzes the Chapter 10 standard from a data processing perspective, providing insight into the benefits and challenges developers will face when writing Chapter 10 software.

International Telemetering Conference Proceedings / October 25-28, 1993 / Riviera Hotel and Convention Center, Las Vegas, Nevada / Many telemetry stations would like to convert from using digital-to analog converters (DAC's) to using direct digital inputs to their chart recorders but can't find a suitable recorder interface. These stations often have hundreds or even thousands of channels of information being bussed around at very high speeds on propriatary real-time computer systems. The lack of standardization has naturally presented recorder manufacturers with problems in selecting the appropriate interface hardware. Standard parallel interfaces, such as SCSI and GPIB, are usually too slow and not really suited for real-time transfer, although they can be used in some circumstances which will be described. The best choice seems to be a general purpose parallel port of at least 16 data bits which can support a large number of addresses. Such an interface can be used with a high speed network like SCRAMNet as well as with a general purpose computer or workstation. This paper will describe several available parallel ports using both TTL and RS-485 (long-line) hardware and some practical implementations of thermal array recorder use with SCRAMNet, GPIB, and general purpose parallel busses.

Digital technology, and speci cally digital data, forms the backbone of nearly all our communications including machine to machine, human to machine, and, increasingly, human to human. It is unsurprising that one of the most prevalent materials of our time is used by artists to create work. This thesis defines data as an art material. It investigates the variety of manifestations of data when used in art, through the review of existing artwork and the development of new artworks and visualisations that use a dataset collected for this research. Through the lens of conceptualising data as an art material, a definition and manifesto of data art is put forward (Chapter 2). In addition, a taxonomy for describing data as an art material is proposed and its usage explored by applying it to a number of data art descriptions and by analysing a database of data artworks tagged with relevant terms (Chapter 3). Temporal, biological, and real-time, terms from the taxonomy, are particularly relevant to the way in which digital technology mediates our connection to nature. To explore these forms of data within artwork, a collaboration with Dr Chris Faulkes, Reader in Evolutionary Ecology, facilitated the design and implementation of an electronic system to collect data from a colony of animals. Chapter 4 describes the tracking system which resulted in a real-time stream of biological temporal data. Translations of this data are explored in more detail through the practical application of various computational techniques including scientific analysis (Chapter 5), animation, sonification, data visualisation (Chapter 6) and soft robotic objects (Chapter 7). The thesis demonstrates that an inanimate object, animated through the translation of data, can have a body language through which to effectively convey characteristics of living things (Chapter 8). Finally, public engagement events are presented in Chapter 9, with reflections, contributions and future work concluded in Chapter 10.

In recent years, dramatic evolution of precision agriculture technology has been driven by technologies such as sensors and controllers, telematics, and UAV. An intriguing area in the field of precision agriculture and UAV is big volume of data and its analysis that have not been dealt with in depth. The main objective of this project is proposed to develop a digital data processing tool and deliver them in a useful format to the end users. This involves three faceted methodical approach: 1) collection of large amounts of UAV images with regards to combinations of in-field sensors and UAV imagery 2) analyze and validate the combination of data with geospatial tools 3) Develop a web-based computer data processing program to analyze the big data and assess pant condition. The validation and correlation analysis results showed that UAV assessed NDVI are good indicator of crop nutrition along with the ground-based crop sensors.