VDF Online Examples

VDF Online Examples

STK users have the ability to export their analysis as Visual Data Format (VDF) files that can be opened in both STK and the free AGI Viewer, providing a method for "zipping" scenario data into one file for easy sharing and collaboration. VDFs allow full interaction with the original scenario when opened in STK, while AGI Viewer enables STK and non-STK users alike to interact with the 4-D analysis in a "read-only" format.

Note: All VDFs require AGI Viewer version 9 or higher to open properly.

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  • Current Events


    • China microsat approaches the ISS - Download Now
      Sept. 27, 2008 - The astronauts on board China's third manned space mission deployed a microsat (BX-1) from their Shenzhou VII spacecraft. After release, the BX-1 came within 23km of the International Space Station (ISS).

  • C4ISR


    • BAMS C4ISR - Download Now
      A mission planning exercise involved in optimizing the flight path for a reconnaissance UAV over the Persian Gulf is being conducted using STK. The mission plan includes understanding the Total Coverage time for the Field of Regard (FOR) for the UAVs sensors to known targets while maintaining a quality link with a communications satellite overhead. A separate study involves a second UAV that is analyzing the Position Dilution of Precision (PDOP) for a GPS-dependent UAV flying along the Gulf coast.

  • Electronic Warfare


    • Electronic Attack - Download Now
      An enemy is using GPS to guide their weapons at coalition forces. We have deployed an EA6B aircraft to deny their use of GPS, making their weapons miss their targets. This scenario shows the power received at the receivers antenna from the EA6B's transmitter. Anything above -110 dBW will have an adverse effect on the enemy's GPS accuracy.

  • Geospatial Intelligence


    • Harbor Surveillance - Download Now
      This VDF is an example of how STK can be leveraged to support GIS-based C4ISR missions, including the ability to calculate sensor coverage over time with multiple entities, such as satellite and UAV systems. The GIS data used in this example has been brought into STK as an ESRI map document.

  • Missile Defense


    • GMD - Download Now
      This scenario shows the flexibility of STK for use in missile defense applications. STK provides a quick and easy environment to perform mission trade studies for missile defense concepts.

  • Navigation


    • IRNSS - Download Now
      This VDF displays the IRNSS (India Regional Navigation Satellite System) constellation being simulated in STK. There are two 3D Windows: one in an inertial reference frame, and one in an Earth-fixed reference frame so the dynamics of the satellites can be easily understood by the viewer. The VDF also contains the results of a PDOP (Position Dilution of Precision) calculation displayed on the Earth's surface. This PDOP figure of merit represents the changing navigational accuracy at each point on the ground as the geometry of the constellation of satellites changes
    • Nav Analysis - Download Now
      As a mission operator, you must estimate the effect on the user's availability on the ground (navigation accuracy) from the GPS constellation. This information will give the troops on the ground accuracy measurements over time for different locations. You must also determine if an aircraft's route through the CENTCOM region will be able to obtain accurate navigation information during its mission.

  • Range Safety


    • Range Safety - Download Now
      This VDF highlights several areas of STK analysis in support of launch range safety for a vehicle lifting off from the Eastern Range.

  • Space Exploration


    • GTO to Mars - Download Now
      This scenario is an example of how Astrogator can be used to design interplanetary missions. Here a spacecraft is traveling from Earth to Mars by way of a Geosynchronous Transfer Orbit (GTO).
    • Libration - Download Now
      Astrogator can be used to model advanced spacecraft trajectories such as missions to the L1 and L2 Earth-Moon libration points. The spacecraft can be drawn in their respective libration point systems by defining their orbit frames using the Vector Geometry Tool.
    • Lunar Mission - Download Now
      This scenario demonstrates the ability to model interplanetary trajectories by using B-plane targeting in the STK/Astrogator add-on module. Similar missions can be designed for gravity assist trajectories, such as the New Horizons mission to Pluto.

  • Space Mission Design and Operations


    • Earth Mapping Mission - Download Now
      The objective of this scenario is to show the use of STK/AVO to aid in orbit design, and systems analysis of a hypothetical Earth space environment mapping mission. This mission needs an orbit design which will allow for complete data collection of the space radiation environment from 400 km to 8000 km over a period of 3 years for the primary mission.
    • Geo Drift - Download Now
      A geostationary satellite is positioned at -100 degree longitude and must maintain it's slot position of 0.2 degrees East-to-West. Two satellites are modeled in this scenario to show the differences in a satellite using a two-body model propagator for its orbit and one using Astrogator to model the stationkeeping burn (TargetDV). The Astrogator propagator is using a custom internal propagator which includes a variation of parameters and all perturbations over time to model the drift of the satellite. As the TargetDV satellite approaches its western boundary limit, a thruster fires to reposition its location in the geo slot. Heads up dynamic data displays RIC range information between the two satellites.
    • Satellite Deploy - Download Now
      This VDF example highlights the ability to model launch profiles and satellite deployment events with STK/Astrogator. A Delta-IV is launching three microsats into LEO orbit, which will subsequently fly in formation. Throughout the launch and deployment of the satellites, conjunction analysis is run using the STK/Conjunction Assessment Tool (CAT) for all objects in LEO orbit. A quick report shows the potential conjunctions for a range threshold of 100 km.

  • Space Superiority


    • SBSS - Download Now
      This scenario demonstrates how STK can be applied to Space Control initiatives such as Space-Based Space Surveillance (SBSS). In the scenario four SBSS satellites in a MEO constellation perform reconnaissance on four GEO satellites.
    • Geobelt Coverage - Download Now
      This VDF is an example of how STK can be used to model sensor coverage at varying altitudes, including thousands of miles above the Earth at the GEO Belt, where Geostationary satellites typically reside. The coverage grid is a 10 band. There are four Sun Synchronous Critically Inclined satellites and three Remote Sensing satellites whose mission is to constantly observe the GEO Belt. Their wide rectangular sensors allow them to scan large swaths of the belt. Coverage accumulates over the 24 hr period and is designated by the colors defined by the coverage legend.

  • UAV Systems


    • UAV Mission Planning - Download Now
      This VDF is an example of using STK for UAV Mission Planning. The Aircraft Mission Modeler (AMM) route designer tool is used to plan the flight of the UAV to recon a valley near its air base. The NIIRS coverage for three different sensor modes can be computed over the area of interest to help understand what modes will yield the best coverage for the mission. A communication link back to the UAV's Ground Control Station (GCS) shows the quality of the link as the UAV is on mission. Creating a Quick Report for the link shows that there are times when the communications link will drop out for the current plan.

  • Viewer Examples


    • Embed Viewer into Powerpoint - Download Now
      Example Powerpoint file that embeds an AGI Viewer window and demonstrates the basic functionality for this use.
    • HTML embedded example - Download Now
      Example html file that embeds an AGI Viewer window and demonstrates the basic functionality for this use. Once you download this example, open the attitude_sim.html file to view it.
    • Distribute Your Analysis - Download Now
      A modified version of the GCCSM VDF, this VDF demonstrates enhanced situational awareness. When viewed with AGI Viewer, the geospatial content can be managed and modified across multiple 3D windows, and resaved as a new VDF. This VDF supports the "How To": Distribute Your Analysis among Situational Awareness Users webinar
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