Patents, Papers, Presentations and Reports

Watson Industries, Inc. has many patents and has also published papers regarding gyro technology and inertial sensing. There is a sampling of these documents listed here. If you have any questions or would like to talk to our engineering staff, please contact us.

Patents

Listed below are some of our US patents.

7,801,694 B1Gyroscope With Temperature Compensation
7,411,465 B2AGC Circuit for the Reduction of Harmonics in the Drive Signal
6,845,667 B1High Q Angular Rate Sensing Gyroscope
6,550,329 B2 High Q Angular Rate Sensing Gyroscope
6,272,925 B1 High Q Angular Rate Sensing Gyroscope
5,802,728Liquid Level and Angle Detector
5,440,817Vertical Reference and Attitude System
5,430,342Single Bar Type Vibrating Element Angular Rate Sensor System
5,329,269Single Core Triaxial Flux-gate Magnetometer
5,272,922Vibrating Element Angular Rate Sensor System and North Seeking Gyroscope
5,270,648 Single Core Triaxial Flux-gate Magnetometer
4,674,331 Angular Rate Sensor
4,628,734 Angular Rate Sensor Apparatus
4,578,650 Resonance Drive Oscillator Circuit
4,511,848 Synchronous AM Demodulator With Quadrature Signal Cancellation
4,479,098 Circuit for Tracking and Maintaining Drive of Actuator/Mass at Resonance

Reports

Magnetometer Installation Guide

This informational guide is written to help users of fluxgate magnetometer equipped Watson sensors to find a suitable mounting location.

Bank Error Graph

See why you need velocity input for your Attitude and Heading Reference System (AHRS). Bank errors can accumulate rapidly during turns if left uncompensated.

Attitude and Heading Reference System Report

A report about the operation and requirements of an AHRS.

A Brief Introduction to GPS Technology

A short read about how GPS devices work. Several of our DMS products have GPS receivers installed.

Papers and Presentations

Vibratory Gyro Skewed Pick-off and Driver Geometry
Location & Navigation Symposium, Indian Wells, CA, USA, 2010

Vibratory Gyro Skewed Driver and Pick-off Geometry
Anniversary Workshop on Solid-State Gyroscopy, Yalta, Ukraine, 2008

Improved Vibratory Gyro Pick-off and Driver Technology
Symposium Gyro Technology, Stuttgart, Germany, 2006

Coriolis Gyro Configuration Effects on Noise and Drift Performance
Symposium Gyro Technology, Stuttgart, Germany, 2002

Vibrating Structure Gyro Performance Improvements
Symposium Gyro Technology, Stuttgart Germany, 2000

Systems for Angle Measurement: A Study in Geometry
Sensors Expo, 1995

Solid State Sensor System for RPV Instrumentation and Control
RPVs – Eleventh International Conference, Bristol, United Kingdom, 1994

Improved North Seeking Gyro
IEEE Position Location and Navigation Symposium, No. 0-7803-0468-3/92, pp. 121-125, 1992

Vibrating Element Angular Rate Sensor for Precision Applications
IEEE Position Location and Navigation Symposium, No. 90CH2811-8, pp. 17-20, 1990

Solid State Rate Sensor Technology and Applications
SAE Business Aircraft Meeting & Exposition, No. 830727, 1983