Navigation Laboratories has tightly integrated its Tapestry controlling software within it's own flexible and powerful hardware platform to create a powerful turn-key hardware platform. This integration achieves a synergism unparalleled in GPS Constellation Simulators – resulting in a system with industry leading NCO update rate, low transport delay, no interchannel bias or analog components requiring calibration.  The all-steel chassis is light weight and easy to move around. In any of the off-the-shelf-configurations, the common hardware elements include:

• 4U x 19” x 27” Rack Mount Steel Chassis; Embedded Dual-Core Intel Windows O/S, Large LCD Monitor, DVD/RW, Ethernet, RS232.
  
• 16 Satellite NLC-DSE proprietary Digital GPS Simulation Engine and RF up-conversion module. This FPGA based system is completely designed and developed by Navigation Laboratories and sockets within the chassis via a PCI expansion slot. 
  
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    • RF Output via N-female connector,
    • 1-PPS/Start-pulse via SMA-Female,
    • 10.23 MHz OCX low phase noise oscillator.
    • 10MHz phase locked clock-out via SMA.
      
• The Tapestry software suite installed. This software provides all of the control elements required to interface with the user through a Windows GUI and control the hardware at the low level via the Windows kernel.
  
• 12 Channel GPS Reference Receiver.  This receiver, installed within a PCI expansion slot operates off of a dedicated RF output to provide power level and performance calibration integrated into the Tapestry software closed loop.

Multiple NLC-DSE expansion cards can be daisy-chained to provide multiple RF outputs with additional GPS satellite channels and functionality.
In addition to the GPS Simulation Engine, we have developed a work horse Multi-Function I/O Expansion Card (MFIO) (optional) that provides outputs for:

• Strapdown Inertial Measurement Units. Compliant electrical and data signals for (DB25 connector),
  • Honeywell HG-1700, (SDLC)
  • Litton Aero Products LN-200, (SDLC, RS422)
  • AMRAAM RS422 in selected formats.
    

Slave/Master data clock, SDLC/RS422 and programmable error models and alignment.

• Automotive Dead Reckoning Units. Electrical and Data signals for (DB25 connector)
  • 4-Wheel (programmable) Distance-Traveled outputs.
  • 1 (programmable) Digital Odometer output
  • 3-Analog (5 VDC 50W ) programmable Rate-of-Turn gyroscopes.
  • 3-Analog (5 VDC 50W ) programmable Accelerometers.
  • ±10 VDC External Rate Table control.
  • 1 Analog (50W) programmable Vehicle Reverse discrete.
    
• Eight (8) Programmable Event-Discrete-Lines. These event lines can be programmed to provide time-driven voltage transitions synchronized with GPS RF signals. These can be used to trigger other equipment or simulate events such as weapons epochs etc.