Accession Number:

ADA386883

Title:

Determining Inertial Orientation of a Spinning Body With Body-Fixed Sensors

Descriptive Note:

Final rept.

Corporate Author:

ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD WEAPONS AND MATERIALS RESEARCH DIRECTORATE

Personal Author(s):

Report Date:

2001-01-01

Pagination or Media Count:

35.0

Abstract:

A methodology for determining absolute inertial angular orientation of a spinning body via independent angular measurements from two arbitrary body-fixed sensor systems is demonstrated. A particular application is denoted that uses Army Research Laboratory solar likeness indicating transducers and magneto-resistive sensors that provide body-fixed, independent angular measurements with regard to their respective local fields. Knowledge of the local field orientations and a coordinate transformation provides the inertial orientation angles, commonly called y and q, which are useful for evaluating and developing advanced flight bodies and as a navigational aid for brilliant munitions. The combination of a dual field sensor system and the orientation determination methodology is called POINTER Projectile Orientation In Navigation TERms. Typical sensor data and reduction processes are reviewed for a spinning body containing optical and magnetic sensors, and alternate field measurements are discussed.

Subject Categories:

  • Air Navigation and Guidance
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE