Inertial-Range Instrumented Hybrid Navigation Systems.

Abstract

The report discusses a Hybrid Navigational System for low altitude airborne tracking and for accurate calibration of range instrumentation equipment. System consists of an airborne inertial platform, transponder for Distance Measuring Equipment (DME) interrogation (providing range and range measurements), barometer type altimeter or a phase array radar, an airborne navigational and filtering computer, and ground based DME. Inertial platform may or may not be torqued. The heart of the system is the navigational computer and the Kalman filter. A reference trajectory is generated by the cubic spline method and along with proper coordinate conversion, the doppler data, range measurements data, barometer data, and the inertial measurement unit (IMU) accelerometer measurements corrupted with noise are simulated. Navigational equations, error equations, and the Kalman filter algorithm are mechanized.

Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1975
Accession Number
ADA016099

Entities

People

  • N. N. Puri
  • R. E. Green

Tags

DTIC Thesaurus Topics

  • Accelerometers
  • Airborne
  • Altimeters
  • Altitude
  • Barometers
  • Distance Measuring Equipment
  • Ground Based
  • Inertial Measurement Units
  • Instrumentation
  • Kalman Filters
  • Low Altitude
  • Measurement
  • Measuring Instruments
  • Navigation
  • Stabilized Platforms
  • Telemetry Equipment

Readers

  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Aerospace Test and Evaluation
  • Inertial Navigation Systems.