C-MIGITS™ III
Miniature Integrated
GPS/INS Tactical System
Applications
Physical Characteristics
System Performance
Environmental

Design & Performance
White Paper

Digital Quartz Inertial Measurement Unit (DQI) 
with 12-Channel, L1 C/A Code GPS Engine

The High-Performance, Low-Cost Navigation Solution
C-MIGITS™ III offers a unique combination of the BEI Systron Donner Inertial Division (BEI-SDID) solid-state Digital Quartz Inertial Measurement Unit (DQI) and the revolutionary Jupiter™ LP commercial Global Positioning System (GPS) receiver.  DQI's micromachined quartz rate sensors and vibrating quartz accelerometers, plus the Jupiter's single board 12-channel Coarse/Acquisition (C/A) Code GPS engine, offer an extremely small, lightweight, low-cost solution. Tightly coupled in C-MIGITS™ III, these two innovative technologies provide a powerful, synergistic Guidance, Navigation & Control (GN&C) system.

 

Diverse applications
C-MIGITS™ III provides high-performance, low-cost guidance, navigation and control for these C/A Code applications:

  • Targets and drones
  • Unmanned vehicles
  • Tactical missiles/smart bombs
  • Range instrumentation
  • Commercial aviation
  • Long-haul commercial transportation
  • Railroads
  • Helicopters

Customized for Specific C/A Code Applications
The integrated Jupiter™ unit can accept and process differential GPS corrections. Plus, C-MIGITS™ III's programmable output lets you customize unique data combinations to meet your specific needs. C-MIGITS™ III offers an efficient, single source for position velocity, time, attitude, heading, acceleration and angular-rate data.


C-MIGITS™ III Innovations at a Glance

  • Low-cost integrated INS/GPS solution for many applications
  • Differential GPS capability
  • Small, lightweight design; Fits in 5-inch diameter enclosures
  • Optimized, 28-state Kalman filtered navigation solution
  • Durable design for high-vibration environments

Physical Characteristics
Size (Vol.) 53.5 in^3 (3.189"W x 3.530"D x 4.750"H) (81mm x 90mm x 121mm)
Weight 2.4 lbs. (1.1 kg)
Power 28 Vdc at 18 watts
I/O RS-232, AMRAAM IMU output, Host Vehicle I/O, DGPS input
Reliability@ 35°C 52,248 hr MTBF, ground; 9,900 hr MTBF, missile

System Performance
C/A Config. Differential
Position (SEP) 3.9m 3.0m
Velocity (1 sigma, horiz/vert) 0.1/0.1 m/s 0.1/0.1 m/s
Attitude (1 sigma) 1.0 mrad 1.0 mrad
Heading (1 sigma, in motion) 1.5 mrad 1.0 mrad
Time (1 sigma) 1 µs 1 µs

Environmental
Temperature Range -40 to +71°C (operating)
Vibration 6-12 grms (performance-endurance)
Shock 20 g, 11 ms
Operating Range ±1000 deg/s*; ±20g (performance-endurance)**; Up to 1,000 m/s***
*Angular Rate **Acceleration ***Velocity