Werner H. Egli - Minneapolis MN Mark W. Weber - Elk River MN
Assignee:
Honeywell Inc. - Minneapolis MN
International Classification:
G01B 902 H01S 3083
US Classification:
356350
Abstract:
In the present application, a discriminant apparatus for a ring laser angular rate sensor is described which provides a discriminant signal indicative of the lock-in rate of the sensor derived from the phase difference between the counter-propagating waves therein. The discriminant signal may be employed in a closed-loop control signal system for altering the coupling of energy between the counter-propagating waves in a ring laser angular rate sensor for controlling the value of the lock-in rate to a minimum rate.
Method And Apparatus For Determining Location And Orientation Of Objects
Werner H. Egli - Minneapolis MN John W. Miller - St. Paul MN Jeffrey M. Setterholm - Minnetonka MN
Assignee:
Honeywell Inc. - Minneapolis MN
International Classification:
G01B 1126 G01S 1300
US Classification:
364559
Abstract:
An orthogonally related target point array is provided in fixed relationship to an object. A photo detector image plane obtains images of the target points projected through a lens located a fixed distance from the image plane. Simple algebraic manipulation of image plane position coordinates of the images corresponding to the target points provides for the establishment of a vector replica of the target point array. The vector replica, in turn, is sufficient data to provide spatial information about the object including position and orientation information with full six-degrees-of-freedom.
Werner H. Egli - Minneapolis MN Wah L. Lim - Anaheim CA Mark W. Weber - Elk River MN
Assignee:
Honeywell Inc. - Minneapolis MN
International Classification:
G01C 1964
US Classification:
356350
Abstract:
A discriminant apparatus for laser angular rate sensors which provides an output signal related to a selected weighted vectorial sum of the coupling of energy between counterpropagating waves traveling about a closed-loop path. The discriminant apparatus is utilized in a closed-loop control system for minimizing the lock-in rate of the sensor and/or maintaining and selecting scale factor linearity.
Apparatus And Method For Determining The Range And Bearing In A Plane Of An Object Characterized By An Electric Or Magnetic Dipole
Werner H. Egli - Minneapolis MN James E. Lenz - Brooklyn Park MN
Assignee:
Honeywell Inc. - Minneapolis MN
International Classification:
G01R 3302 G06G 778 G01B 714 G05F 100
US Classification:
324207
Abstract:
Orthogonal components of electromagnetic field perturbations due to objects characterized by electric or magnetic dipoles are measured along orthogonal axes in a plane. The components are proportional with (3 cos. sup. 2. theta. -1) and (3 cos. theta. sin. theta. ), where. theta. is the bearing of the dipole center relative to the device for measuring the field components. . theta. is readily determined from these equations and the range of the object can also be determined from knowledge of the dipole moment.
Helmet Metal Mass Compensation For Helmet-Mounted Sighting System
Werner H. Egli - Minneapolis MN Jeffrey M. Setterholm - Minnetonka MN E. Jack Weir - Roseville MN
Assignee:
Honeywell Inc. - Minneapolis MN
International Classification:
F41G 900 G01R 3302
US Classification:
89 41EA
Abstract:
An electromagnetic system for determining the orientation including position of a helmet worn by a pilot is disclosed having a transmitting antenna for transmitting electromagnetic field vectors, a receiving antenna for sensing the electromagnetic field vectors generated by the transmitting antenna, and a control apparatus responsive to the sensed electromagnetic field vectors and the transmitted electromagnetic field vectors for determining the compensated orientation of the helmet, the compensated orientation relying upon the rotation matrix determined by a previous solution for the orientation of the helmet.
Ring Laser Angular Rate Sensor With Modulated Scattered Waves
The present invention provides a method and apparatus applicable to ring lasers for modulating scattered waves reflected from the mirrors which define the ring laser optical closed-loop path in such a way to reduce the average error produced by lock-in effects to low levels approaching an average of zero.
Oil Well Bore Hole Surveying By Kinematic Navigation
Werner H. Egli - Minneapolis MN Lawrence C. Vallot - Shoreview MN
Assignee:
Honeywell, Inc. - Minneapolis MN
International Classification:
E21B 47022
US Classification:
364422
Abstract:
Apparatus and method for the surveying of bore holes, for example, oil wells and the like, to permit accurate three-dimensional mapping thereof, using a single rate gyroscope and an accelerometer package in an instrumentation pod which is lowered into the bore hole. Signals from the accelerometers and the rate gyroscope plus the increments by which the pod is lowered into the well permit continual calculation of pod attitude and updated of pod position at all depths in the hole.
Method Of Fabricating A Readout Apparatus For A Ring Laser Gyroscope
Werner H. Egli - Maple Grove MN Robert A. Pajak - Ham Lake MN
Assignee:
Honeywell Inc. - Minneapolis MN
International Classification:
G01C 1964
US Classification:
356350
Abstract:
A gyro readout mask is made from the actual readout interference fringe pattern. A photographic image of the readout interference fringe pattern is made, and the resulting photographic image, or a derivative thereof, is itself used as the mask.
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