DQI-NP
Digital Quartz Inertial
Measurement Unit with Navigation Processor
Applications
Physical Characteristics
System Performance
Environment

Next-Generation, Low-Cost, Externally Aided 
Inertial Navigation System (INS) Technology

DQI-NP is a unique guidance, navigation & control (GN&C) product that exploits the BEI Systron Donner Inertial Division (BEI-SDID) leading-edge solid-state DQI technology.  DQI-NP features dual tuning fork quartz rate sensors and vibrating quartz accelerometers, also in a dual-beam configuration. The inertial sensor assembly is combined with digital, miniaturized electronics, and features digitized outputs -- all using BEI-SDID's proprietary signal-processing techniques.

The DQI processor hosts the MIGITS INS/GPS software, while addition of a navigation processor adapter (NPA) allows the unit to interface with an external GPS receiver. This allows the user to employ any GPS receiver that conforms to the standard DQI-NP receiver protocols.

 

Diverse applications
DQI-NP provides next-generation, low-cost INS/GPS technology for:

  • Unmanned aerial vehicles
  • Ease of integration with stand-alone GPS receivers
  • Land navigation
  • Commercial/General Aviation

Versatile Design Grows with Your GN&C Needs
Another revolutionary DQI-NP feature, Kalman filter software processing and interface circuitry are added with the Navigation Processor feature. This lets you integrate the IMU directly to an external GPS receiver, and easily adapt DQI-NP to upgraded GPS receivers as they become available. Plus, DQI-NP is fully adaptable to a wide range of system architectures, at very low cost.

DQI-NP Innovations at a Glance

  • Solid-state inertial measurement unit offers superior reliability
  • Low-cost micromachined inertial sensors
  • Compact, lightweight design
  • Hermetically sealed IMU for long life
  • Integrates with GPS receivers; will easily adapt to future upgraded GPS receivers
  • Loosely coupled (PPS) or tightly coupled (SPS) INS/GPS solution. INS compensates for GPS-coverage gaps
  • PLGR (Precision Lightweight GPS Receiver) compatible
  • Click to view: Design & Performance White Paper

Physical Characteristics
Size (Vol.) 52.5 in^3 (3.19"W x 3.53"D x 4.66"H) (81mm x 90mm x 121mm)
Weight 2.65 lbs. (1.2 kg)
Power 28 VDC at 17 watts
I/O AMRAAM IMU output, Host Vehicle I/O, GPS & DGPS input
Reliability @ 35°C 52,994 hr MTBF, ground; 9,789 hr MTBF, missile

System Performance (GPS receiver dependent)
C/A Config. P/Y Config.
Position (SEP) 78 m 13 m
Velocity (1 sigma, hor/vert) 0.5/1.0 m/s 0.02/0.04 m/s
Attitude (1 sigma) 2.0 mrad 1.0 mrad
Heading (1 sigma, in motion) 3.5 mrad 1.0 mrad
Time (1 sigma) 120 ns 100 ns

Environmental
Temperature Range -54 to +71°C (operating)
Vibration 6 grms
Shock 20g, 11 ms
Operating Range ±1000 deg/s*; 15-70g (performance-endurance)**; Up to 12,000m/s***
*Angular Rate **Acceleration ***Velocity