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International Telemetering Conference Proceedings / October 20-23, 2003 / Riviera Hotel and Convention Center, Las Vegas, Nevada / The Western Aeronautical Test Range (WATR) of NASA’s Dryden Flight Research Center (DFRC) is facing a challenge in meeting the technology demands of future flight mission projects. Rapid growth in technology for aircraft has resulted in complexity often surpassing the capabilities of the current WATR real-time processing and display systems. These current legacy systems are based on an architecture that is over a decade old. In response, the WATR has initiated the development of the WATR Integrated Next Generation System (WINGS). The purpose of WINGS is to provide the capability to acquire data from a variety of sources and process that data for subsequent analysis and display to Project Users in the WATR Mission Control Centers (MCCs) in real-time, near real-time and subsequent post-mission analysis. WINGS system architecture will bridge the continuing gap between new research flight test requirements and capability by distributing current system architectures to provide incremental and iterative system upgrades.

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International Telemetering Conference Proceedings / October 20-23, 2003 / Riviera Hotel and Convention Center, Las Vegas, Nevada / The Western Aeronautical Test Range (WATR) Integrated Next Generation System (WINGS) Mission Segment provides data acquisition, processing, display and storage in support of each project’s mission at NASA Dryden Flight Research Center (DFRC). The network architecture for WINGS Mission Segment is responsible for distributing a variety of information from the Telemetry and Radar Acquisition and Processing System (TRAPS), which is responsible for data acquisition and processing, to the Mission Control Centers (MCCs) for display of data to the user. WINGS consists of three TRAPS and four MCCs, where any TRAPS can drive any one or multiple MCCs. This paper will address the requirements for the TRAPS/MCC network and the design solution.

International Telemetering Conference Proceedings / October 22-25, 2001 / Riviera Hotel and Convention Center, Las Vegas, Nevada / Deutsche Telekom is operating various communication satellites since 1989. The SCC (spacecraft control center) is located near Frankfurt / Germany. The entire system is based on antenna/RF equipment, baseband and computer software packages running on a computer network of different machines. Due to increased maintenance effort the old baseband system needed to be replaced. This also had effects to the computer system, especially to the M&C. The aim was to design the entire system in a way that the operation effort in costs aspects and human intervention are minimized. This paper shows the successful real world project of reengineering a traditional spacecraft control center (SCC). It is shown how a fifteen year old hardware (baseband system) and software design was replaced by a modern concept during normal operations. The new software packages execute all necessary tasks for spacecraft- and ground station control. The Monitor and Control System (M&C) is a database driven design (FRAMTEC, from CAM Germany).

International Telemetering Conference Proceedings / October 28-31, 1996 / Town and Country Hotel and Convention Center, San Diego, California / This paper describes the Production Monitor (PM), a result of integrating very diverse hardware architectures into a compact, portable, real time airborne data monitor, and data analysis station. Flight testing of aircraft is typically conducted with personnel aboard during flight. These personnel monitor real time data, play back recorded data, and adjust test suites to certify or analyze systems as quickly as possible. In the past, Boeing has used a variety of dissimilar equipment and software to meet our testing needs. During the process of standardizing and streamlining testing processes, the PM was developed. PM combines Data Flow, VME, Ethernet, and PC architectures into a single integrated system. This approach allows PM to run applications, provide indistinguishable operator interfaces, and use data bases and peripherals common to our other systems.

International Telemetering Conference Proceedings / October 30-November 02, 1995 / Riviera Hotel, Las Vegas, Nevada / The desire to acquire large quantities of high speed vibration and acoustic data during aircraft testing is usually satisfied through on-board high speed recording methods. However there is often a need to have some of this data instantly available at the ground station for flight safety and other purposes. A Data Processor (DP) has been developed allowing an airborne data acquisition system to acquire large amounts of wideband analog data, process the data in real-time, and develop reduced bandwidth information from high bandwidth channels. The reduced data can be inserted into a Pulse Code Modulation (PCM) stream and telemetered via a Radio Frequency (RF) link with a potential for a 2000:1 reduction in bandwidth. This on-board processing capability also lends itself to additional tasks such as the generation of a reduced bandwidth marker channel which can flag critical time periods of data activity. This flagging technique can be used to facilitate ground station analysis of specific segments of data, resulting in significant cost and time savings.

High-level programming language features simplify software development by eliminating many low-level programming concerns and by providing programmers with useful abstractions to simplify description and analysis of their programs. This dissertation discusses briefly some of the special needs of structural pattern-matching programs that must execute in real time and suggests language features to support these needs. These language features are implemented in an experimental version of the Icon programming language and examples of how these language features can be used are presented. This dissertation also presents and discusses the implementation of these language mechanisms, including the implementation of a new algorithm for garbage collecting linked data structures and strings in real time. One of the new language features is a stream data type, which allows programmers to perform pattern matching directly on sequences of data values produced by external sources, without requiring explicit read operations to bring the data into memory before analyzing it. Other new language features provide the ability to create and manipulate concurrent Icon processes, between which the stream data type serves as the principal mechanism for interprocess communication. Stream and concurrent process manipulation mechanisms integrate naturally with each other and with the existing mechanisms of the Icon programming language. Sequential Icon programs are, for the most part, unaffected by the new language capabilities.

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The purpose of this study is to design a simple, efficient, single-user multitasking kernel for real-time applications on the IBM Personal Computer. Since real-time application consists of many tasks and their order of execution cannot be predetermined, it is almost impossible to write a monolithic block of code that can meet the response time of all the tasks. By using multitasking, each task is assigned a priority based on the urgency of its response time. The kernel uses a priority-based preemptive scheduling strategy to select a new task to run, so the highest-priority task can always get to run when it is ready. The Basic Input/Output System of the PC is rewritten to be reentrant so that it can be shared by multiple tasks.