Presentation on theme: "Steve Williams RT Logic 12515 Academy Ridge View"— Presentation transcript:
1Using STK for on-the-air Missile/Weapons Range Mission Readiness and Mission Capability Assurance Steve WilliamsRT Logic12515 Academy Ridge ViewColorado Springs, CO 80920,
2T400CS Channel Simulator Overview Receive StationOr SystemWhenever transmitters and receivers are in motion with respect to each other…
3T400CS Channel Simulator Overview Receive StationOr System…flight and ground systems must be fully tested against these conditions.Doppler ShiftRange attenuationRange delayAmbient RF noiseJammers and interferersFrequency selection, power levels and antenna characteristicsModulation type and data rateTerrain and overhead obscurationNatural and man-made atmospheric conditionsFlight paths, Orbits and Ground pathsGround locationsEtc.Nominal and worst-caseRF COMMS Link TestsAre Critical
4T400CS Channel Simulator Overview Flight Equipment TestingExamples: Receivers, transmitters, modems, decoders, algorithms, etc.Ground Equipment TestingExamples: Receivers, transmitters, modems, decoders, algorithms, etc.Inter-vehicle LinksExample: LEO passing data to GEOCOMMS on the MoveExamples: Bouncing antenna on a Truck, Rolling antennas on Ships, Etc.Test Range TestingExamples: Air-to-Ground, Ground-to-Air, Air-to-Air Weapons, Etc.
5T400CS Channel Simulator Overview Tests must be realistic to have valueNominal CaseWorst Case“Gold” Regression TestsRelative motion and flight paths relate to most of the difficult conditions that need to be tested againstRT Logic Photo
6T400CS Channel Simulator Overview Perfect BlendT400CS adds hardware-in-the-loop testing to STK modelingAGI’s STKSetup, visualization and physics engineFlight paths, RF COMMS parameters, Ground locationsDon’t have to understand flight/orbital dynamicsCalculations are complex keep focused on work, not on toolVery technical channel simulator user model without STK commanding of T400CSRT Logic’s T400CS Channel SimulatorGenerates actual IF / RF signalsHigh fidelity, physics-compliant test signals from STK modelsPhase-continuous, smooth interpolationCarrier Doppler and Signal DopplerSignal impairments (Noise, fading, plume effect, etc.)
9Test Ranges General Test Range Business Model STK Channel Simulator Provide area for test flightsProvide safety to test operationsCollect telemetry from vehicles under testReturn best-source telemetry to customerSTKProvides key test planning toolChannel SimulatorProvides key signal generation toolLarge investments are at stakeLivesMoney (ALCM ($1M) + B-52 + Crew + Fuel + Range Staff + Range Fees …)Range time is in short supplySome test are one-shot and can’t be reflownTogether, these create a vital and unique range operations and mission assurance solution.
16ALCM Transmitting Telemetry TM SiteTelemetry from ALCMBoeing Photo
17Different Attenuation ALCM Test FlightTM SiteTM SiteSame general signal atEach TM site from ALCM:Different DopplerDifferent DelayDifferent AttenuationEtc.TM SiteTM Site (Mobile)USAF PhotoTM Site
18ALCM Test Flight Mission Control Center: TM SiteMission Control Center:Mission safety and best-source telemetryTM SiteTM SiteTM Site (Mobile)USAF PhotoTM Site
19Range and Mission Assurance Asset TM SiteTM SiteT400CS Channel Simulator + STKGenerates the same signals, but no flight is required.Key Range and Mission Assurance Asset.TM SiteTM Site (Mobile)USAF PhotoTM Site
21UTTR – Wendover Peak TM Site UTTR Goshute TM Site(as viewed from WendoverPeak TM site)RT Logic PhotoRT Logic Photo
22UTTR Wendover Peak TM Site Spectrum Analyzer (Top)S-Band Power Amplifier (Middle Unit)RT Logic T400CS Channel Simulator (Bottom Unit)RT Logic PhotoRT Logic PhotoLaptop Running STK and T400STK BridgeRT Logic Photo
23UTTR Wendover Peak TM Site Transmit Signals from Wendover Peak to Goshute as if they came from the ALCM.RT Logic Photo
24UTTR Wendover Peak TM Site RT Logic PhotoRT Logic Photo
25UTTR Test Results Assure T400CS STK bridge functionality Assure T400CS with STK can transmit properly perturbed flight path data, at RF, to a distant TM site.Assure normal MCC receipt of collected TM data.Obtain data from an actual missionALCM TelemetryPointing Data (Azimuth, Elevation, Time)Generate STK scenario from actual missionRun STK scenario driving Channel Simulators with actual dataCompare MCC results from simulated mission to those from actual missionRun similar tests at WSMR (late August, 2009)
26How AGI software was applied T400STK BridgeUses STK EngineReceives events from STK when important changes take placeQueries STK for additional data when these events occurPerforms further T400CS-specific calculationsSends commands to T400CS via TCP/IP SocketsNo STK modifications were necessary
27How AGI software was applied Temporary use of “Chains” to specify T400CS operation.
28How AGI software was applied STK 9 Implementation will be much better integrated.
29Key technical attributes Key attributes of STK that enabled thisEasy and flexible scenario creationStrong visualizationPrecise physics-engine modelingSTK Engine / True “Components” ArchitectureExcellent customer supportKey attributes of T400CS that enabled thisTrue-to-nature signal generationHardware-in-the-loop capabilityClient / Server instrument software modelModular hardware and software architectureEthernet programmable
30Summary STK is a world-class modeling tool. T400CS is a world-class channel simulator.Together, they enable true test.Reduces test time and cost.Reduces danger of some tests.Improves depth and accuracy of test.Keeps engineers focused on tests, not tools.Creates a unique test system for a wide variety of applications.