• AFFTC RADIOMETRIC ANALYSIS AND MEASUREMENT SYSTEM

      Schmidt, Allen; Computer Sciences Corporation (International Foundation for Telemetering, 1999-10)
      A broad class of Electro-Optical (E-O) sensors are continually being improved and/or developed for aircraft to assist in performance of such tasks as surveillance, target acquisition, target designation, and weapons delivery. These E-O sensors possess a variety of Electro-Optical links that encompass the spectral region of 0.4 to 14 micrometers. The Radiometric Lab at Edwards Air Force base is tasked to provide instrumentation support for projects that develop, test, and evaluate ground and airborne E-O systems/sensors. The heart of the labs support capability is the Radiometric Analysis and Measurement System (RAMS) and is contained within an all-terrain van. A variety of sub-systems exist within the van to meet support requirements. These include an 8 to 12 micron infrared (IR) imaging system, 4 to 14 micron spectral radiometer, 380 to 1068 nanometer spectral radiometer, 400 to 1800 nanometer imaging camera, 1.064 nd:YAG laser, off-axis collimator with IR and visible light sources, and a weather station. This paper describes the system, its capabilities and limitations, and its application in aircraft sensor evaluation.
    • USE OF ID-1 HIGH DENSITY DIGITAL RECORDING SYSTEMS FOR TEST RANGE SUPPORT

      Schoeck, Kenneth O.; Vanderberg Air Force Base (International Foundation for Telemetering, 1999-10)
      The Space and Missile Systems Center at Vandenberg AFB has integrated ID-1 high bit rate helical scan digital recorders into the ground based and mobile telemetry receiving and processing facilities. The systems are used for recording higher bit rates than those available with the current IRIG standard longitudinal wideband and double density instrumentation magnetic tape recorder/reproducers. In addition to the 400 Mbps digital recorders, the systems consist of high-speed multiplexer/ demultiplexers and multi-channel bit synchronizers for recording numerous telemetry data links and sources on a single recorder. This paper describes the system configurations and compares recording capabilities with those of the previous generation instrumentation magnetic tape recorder/reproducers.
    • KEY TECHNOLOGIES IN DEVISING AUTONOMOUS VEHICLE LOCATION AND NAVIGATION SYSTEM

      Fei, Peng; Pingfang, Zheng; Qishan, Zhang; Zhongkan, Liu; Beijing University of Aeronautics and Astronautics (International Foundation for Telemetering, 1999-10)
      In this paper, a devising scheme of Autonomous Vehicle Location and Navigation System is introduced firstly. Then, several key technologies used in the devising scheme are presented, which includes a data fusion method based on extended decentralized kalman filter technology, a map-matching method used to compensate the positioning error, and a digital map data processing method used to realize route planning algorithm. By this time, a sample machine based on the devising scheme introduced in this paper has already been worked out successfully. The availability and the advantages of these technologies have been demonstrated.
    • A NEW APPROACH------THE USE OF MSCS FOR SPACECRAFT TT&C DATA TRANSMISSION

      Jisheng, Zhang; China Satellite Launch and Tracking Control General (International Foundation for Telemetering, 1999-10)
      As Mobile Satellite Communication Systems (MSCS), such as INMARSAT, Iridium, Globalstar, ICO, et al, are emerging, the feasibility analysis of MSCS using for spacecraft TT&C data transmission have been studied by many space agencies and scientists. In this paper, the usability of MSCS’s low data transmission for modern spacecraft is analyzed. The availability of existing and near future MSCS are reviewed briefly in terms of orbital coverage, data transmission rate, EIRP, adaptability and so on. The special problems to be resolved are discussed such as compensation for high Doppler frequency shift, provision of user spacecraft EIRP, antenna beams steering of user spacecraft, use of advanced modulation scheme.
    • Using Commercial Global Personal Communication System for a Global Test Range

      Rogers, Rodney; LeBlanc, James P.; Ryerson, David E.; Snell, James; New Mexico State University; Sandia National Laboratories (International Foundation for Telemetering, 1999-10)
      This paper investigates the feasibility of using commercial satellite constellations to relay telemetry data from flight test vehicles as part of a Global Test Range. The use of a commercial satellite constellation would provide an augmented capability to the test range, providing near real-time data to the data reduction site and test range control at reasonable cost. This includes an analysis of current and proposed commercial communication satellite constellations to determine if any of them would fulfill the needs of a telemetry test range. Preliminary assessment of the communication link between a flight vehicle and the satellite constellations is performed.
    • AIRSPACE UTILIZATION REPORTING SYSTEM FOR THE R-2508 COMPLEX

      Ward, John M.; Edwards Air Force Base (International Foundation for Telemetering, 1999-10)
      Increasingly, military managers are requiring better and more efficient use of Special Use Airspace (SUA) and Military Operating Areas (MOA). To date, there has been no automated method for determining airspace utilization within the R-2508 Complex. This paper describes the development of a computer based airspace management tool called Airspace Utilization Reporting System (AURS). AURS receives aircraft beacon radar data from an air traffic control automation system used within the R-2508 Complex. The system processes this data in a customized Oracle database format and responds to query requests, making any information about aircraft activities and airspace utilization available to the user. AURS operates continuously 24 hours per day, seven days per week. The system provides a tool for near complete analysis of all transponder equipped aircraft activities and utilization information within the 20,000 square miles R-2508 airspace Complex. In this paper we also provide detailed AURS reports and examples of military and civilian aircraft activities obtained with AURS.
    • EFFICIENT MANAGEMENT AND CONTROL OF TELEMETRY RESOURCES

      Cowart, Alan E.; Baldonado, Michelle; Scientific Research Corporation; AFFTC/ARTM (International Foundation for Telemetering, 1999-10)
      In recent years the telemetry community has encountered a growing demand for bandwidth from users and a corresponding loss of spectrum. The Advanced Range Telemetry (ARTM) Program has responded to this situation with an initiative to develop, demonstrate, and improve the management and control of telemetry resources using demand assigned multiple access (DAMA) techniques. This initiative has proceeded along two paths. The first path is in the development of an expert system to facilitate the scheduling of telemetry missions and the deconfliction of their frequencies. This system emphasizes the graphical manipulation of mission data and uses a genetic algorithm to search for an optimal set of mission frequencies. The second path is the development of a bidirectional command and control link to remotely control and configure the frequency of a telemetry link. This link uses the simple network management protocol (SNMP) over a wireless Internet Protocol (IP) network implemented with Digital Communications Network System (DCNS) units.
    • MOBILE TRACKING SYSTEM “MOTION ON THE OCEAN” TEST

      Pedroza, Moises; White Sands Missile Range (International Foundation for Telemetering, 1999-10)
      The Transportable Range Augmentation and Control System (TRACS), Mobile Telemetry System (MTS), is a versatile system capable of supporting anywhere when called upon. The MTS is designed to operate anywhere on land. It is unknown how the system will perform on a floating platform without a stabilizing gimbal. The operation of a tracking system at sea generally require the use of a three-axis pedestal. The MTS is a two-axis pedestal. This paper is a report on how the MTS responds to simulated ocean-motion. Testing the system on a body of water is very expensive, especially out in the desert. The MTS was tested in the desert area of Las Cruces, New Mexico in the parking lot of EMI Technologies, prime contractor, using two forklifts to simulate ship motion in the pitch and yaw planes. The location is perfect for crossover dynamics tests. The tests conducted were for the purpose of determining if the MTS could auto-track a moving signal in space while it also moves due to “simulated ocean swells” that increase the generated tracking error signal levels in an opposite or in addition to the ones generated from the space vehicle. There is no gyroscopic correction. Successful results of the tests could preclude the use of a gyroscopically stabilized gimbaled platform necessary to keep the tracking system steady for auto-tracking a target during “6 degrees of freedom” disturbances. Several thousand dollars can be saved if the concept can be proven.
    • A VERSATILE PROGRAMMABLE FUNCTION RF ASIC FOR SPACE-BASED RF SYSTEMS

      McMahon, Michael; Rhoads, Albert; Winter, Frank; Pierson, Graham; L-3 Communications (International Foundation for Telemetering, 1999-10)
      A programmable RF ASIC is described which provides most of the RF functions within a next generation S-band transponder for space applications. The unique 18-contact LCC device can be programmed to perform a variety of RF and analog functions. This single space qualified high speed bipolar "function toolbox" is used in 39 locations throughout the transponder to provide a flexible radio architecture. The ASIC design process, internal electrical design, circuit application, space environment performance, and RF testing of the RF ASIC are described. This proprietary part provides a space-qualified solution for RF circuitry that can be applied to a variety of space application products.
    • A STATUS REPORT OF THE JOINT ADVANCED MISSILE INSTRUMENTATION PROGRAM AN OFFICE OF THE SECRETARY OF DEFENSE CENTRAL TEST AND EVALUATION INVESTMENT PROGRAM INITIATIVE

      Scofield, Don; Powell, Dave; NAVAL AIR WARFARE CENTER WEAPONS DIVISION (International Foundation for Telemetering, 1999-10)
      Joint Advanced Missile Instrumentation (JAMI), a 1997 new-start multi-year Central Test and Evaluation Investment Program (CTEIP), is developing advanced telemetry system components that can be used in an integrated instrumentation package for tri-service small missile test and training applications. JAMI will provide telemetry, Time-Space-Position Information (TSPI), flight termination and end-game vector scoring in a low cost, modular package that will allow world-wide test and training- eliminating, in most cases, the need for range-specific (or multi-system) facilities. JAMI will incorporate Global Positioning System (GPS)-based technology as the TSPI and vector scoring engine, and address the feasibility of a solid state programmable safe and arm. This paper discusses the progress of the program during the Test Technology Development and Demonstration (TTD&D) phase and the efforts planned for fiscal year 1999. Preliminary testing of GPS receivers and conformal GPS antennas on missile platforms are discussed.
    • TECHNICAL CAPABILITIES AND RESOURCES OF THE EXTENDED TEST RANGE ALLIANCE

      Mackall, Dale A.; Sakahara, Robert D.; NASA; Air Force Flight Test Center (International Foundation for Telemetering, 1999-10)
      The Edwards Flight Test Range is a part of 20,000 square miles of DOD airspace (R-2508). A hypersonic air vehicle traveling above Mach 3 can easily exceed that airspace within seconds. An Unpiloted Autonomous Vehicle can exceed the airspace when flying long duration missions. To satisfy the flight-test requirements of Hypersonic Air Vehicles and Unpiloted Autonomous Vehicles, additional airspace and extended test ranges are required. The Air Force Flight Test Center and Dryden Flight Research Center at Edwards Air Force Base, California have mutual goals to support these flight test programs. To meet these goals, the Extended Test Range Alliance was formed as an engineering and operations team to satisfy program requirements in the areas of telemetry, flight termination, ground communications, uplink command, and differential global positioning systems. This paper will discuss the resources and technical capabilities available through the Extended Test Range.
    • International Telemetering Conference Proceedings, Volume 35 (1999)

      Unknown author (International Foundation for Telemetering, 1999-10)
    • FLEXIBLE SECURE DATA COMMUNICATIONS WITH THE RANGE ENCRYPTION MODULE

      Watkins, Stan M.; L3 Communications Corp. (International Foundation for Telemetering, 1999-10)
      This paper discusses the design, application and flexibility of the Range Encryption Module (REM) developed by L3 Communications Conic Division for the Range Application Joint Program Office (RAJPO) located at Eglin Air Force Base in Florida. The REM is a burst encrypter that utilizes the National Security Agency Thornton CTIC/DS- 101 Hybrid (CDH) encryption algorithm. The CDH device operates under the control of a Conic-designed digital ASIC. The CDH, ASIC, Power Management and parallel bus interface circuits reside on a single card within the REM called the Common Encryption Core (CEC). The REM and CEC card within the REM offer flexibility in many operational features, as described below.
    • AN OPEN-ARCHITECTURE APPROACH TO SCALEABLE DATA CAPTURE

      Mason, Terry; Thames, Fred (International Foundation for Telemetering, 1999-10)
      The ultra high capacity disk-based data recorders now entering service offer not just a convenient and inexpensive alternative to conventional tape systems for applications like Telemetry and Flight Test but also a unique opportunity to rethink the classical models for data capture, analysis and storage. Based on ‘open architecture’ interface standards- typically SCSI-this new generation of products represents an entirely new approach to the way data is handled. But the techniques they employ are equally applicable to any SCSI storage device. This Paper discusses a range of practical scenarios illustrating how it is now possible to `mix-and-match’ recording technologies at will-disk-array, DLT, DTF, ExaByte, JAZ, ZIP, DVD, etc.- to produce an almost infinite combination of readily scaleable plug-and-play data capture, analysis and archiving solutions. The cost and reliability benefits arising from the use of standard mass-produced storage sub-systems are also considered
    • STUDY ON OEM-BASED DIFFERENTIAL GPS

      Shengxi, Ding; Qishan, Zhang; Xianliang, Li; Beijing University of Aeronautics and Astronautics (International Foundation for Telemetering, 1999-10)
      Two kinds of differential GPS (DGPS) technology on position differential GPS and pseudo-range differential GPS are studied and compared in this paper. Positioning tests by single GPS receiver, position DGPS and pseudo-range DGPS systems based on GPSOEM board are done. Experiment result indicates that position error is about 30 - 100 meters on single GPS receiver and position error is reduced to 3 - 10 meters on DGPS. Furthermore, Developed DGPS system which is based on GPS-OEM has the advantages of low cost, utility and flexibility, etc.
    • DESIGN AND DEVELOPMENT OF A FIBER OPTIC TELEMETRY PACKAGE

      Griffith, Jerry A.; Rowan, Herman K.; Huber, August J.; USAF Air Armament Center; USAF Guided Weapons Evaluation Facility (International Foundation for Telemetering, 1999-10)
      The Guided Weapons Evaluation Facility (GWEF) at Eglin Air Force Base is the Air Force’s premiere munitions hardware-in-the-loop (HITL) simulation facility. HITL simulation testing is a ground based tool used to evaluate the performance of a weapon system at a fraction of the cost of free flight testing. The weapon system is stimulated in a laboratory setting with the electromagnetic environment and physical motion it would experience in an operational setting. The system’s responses to that environment are measured to provide various measures of performance including target tracking ability and miss distance. Electrical interfaces are required in order to control the weapon’s guidance system and to receive and inject signals from the HITL simulation computer system to the weapon under test. These interfaces are usually developed using external control circuits and copper cabling to the guidance unit. The GWEF had a requirement to develop a missile interface with no external copper wires or antennas to support a unique test configuration. The requirement led to the development of a Fiber Optic Telemetry (FOTM) package which would be contained completely within the missile body cavity. The constraints on the FOTM design were considerable. Lack of a suitable commercial off-the-shelf fiber optic telemetry package led to the eventual in house design and fabrication of the FOTM. This paper describes the requirements, design constraints and results achieved in the FOTM design. Although not classical telemetry it does share similarities with conventional telemetry units used for open air weapons testing including size constraints, data rates and thermal considerations.
    • Development of a Surface-to-Air Missile T&E Federation

      Lucas, Jason L.; Kent, Robert A.; TYBRIN Corporation; 96 CG/SCTOS (International Foundation for Telemetering, 1999-10)
      This paper focuses on the development of the Surface-to-Air Missile Federation (SAM Fed), a Test and Evaluation (T&E) High Level Architecture (HLA) federation. The SAM Fed evolved from a legacy constructive real time/post mission hardware-in-the-loop (HITL) Surface-to-Air Missile (SAM) simulation. The process to transition from a standalone simulation to a distributed HLA federation as well as the problems experienced and lessons learned will be presented. This paper will also discuss the merit of standardizing internal federate interfaces to facilitate reuse.
    • A NEW TYPE OF SOFTWARE ORIENTED SECURE SYSTEM FOR WIRELESS COMMUNICATION

      Wu, Hao; Zheng, Zhiping; Zhang, Naitong; Harbin Institute of Technology (International Foundation for Telemetering, 1999-10)
      Wireless information transmission is easy to be suffered from various threats in an open environment. In this paper, we proposed a new type of software oriented secure system for direct wireless information transmission. We first present the special functions and requirements, which have to be satisfied during introducing the secure system. Then, we divide the secure system into three stages: normal operating stage, key presetting stage, and key replanting stage. The security, reliability and the computing complexity of this system are analyzed in this paper. Finally, we carried out this secure system by software and proved the availability.
    • SOFTWARE RADIOS APPLYING TO THE DGPS TRANSCEIVERS

      Wu, Hao; Zhang, Naitong; Harbin Institute of Technology (International Foundation for Telemetering, 1999-10)
      To make the DGPS data link can be easily modified and updated, the ‘software radio’ technology becomes a logical architecture choice applying in a DGPS transceiver. This paper will discuss the system architecture and the key technology of software DGPS transceiver, which will become a multi-band and multi-function transceiver. It will operate at the uniform hardware platform to realize two receivers’ functions ¾ both the GPS receiver and the data link receiver (or transmitter). Then, this paper will give the design and implementation of the transceiver. Finally, it will demonstrate the simulation results of the system.
    • AIR FORCE FLIGHT TEST CENTER RANGE SAFETY SYSTEM

      Cronauer, Tom; Cronk, Steve; Lipe, Bruce; Air Force Flight Test Center Range Division (International Foundation for Telemetering, 1999-10)
      The Range Division of the 412th Test Wing has recently had to incorporate high power RF transmission, remote monitoring and remote operation of systems to support the new Range Safety function incorporated within the Range. The sub-systems that make-up the Range Safety System are: Command Transmitter System (CTS) Command Panel System (CPS) Instantaneous Impact Prediction (IIP) (modified TECCS) Range Safety Data Display (ADAPS) Range Safety Data Recording (RaSDR) Flight Termination Test Set Being aware of the increasing importance of cost associated with ground and flight testing, the Range has structured its systems around Commercial Off The Shelf (COTS) hardware and software and remote operations where ever and when ever possible. This paper will outline the Ranges approach to Range safety addressing the rational behind the system design and making the customer happy. We will also discuss typical operations and how the Range maintains redundancy and RCC compliance.