STEPPED GRAVITY GRADIOMETER
Assignee
UNISYS CORPORATION, A CORP. OF DE
Filed
Nov 27, 1987
Granted
Aug 30, 1994
Location
HUNTINGTON NY US
Abstract
A gravity gradiometer instrument alternately and sequentially rotatable in opposing angular increments provides a measure of the gravity gradient in-line and cross components without requiring real-time generation of trigonometric harmonic components, continuous demodulation to separate the component data signals, or filtering. Demodulation of the output data is accomplished by simple summing of the data from successive angular positions of radially opposing accelerometers. Precise control of the rotational speed is not required. Further, the accelerometer complement is minimal and because the direction of rotation is periodically reversed, a twist capsule is used rather than slip rings, thereby avoiding the noise and maintenance problems associated therewith.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Mar 22, 1988
Rescinded
Apr 15, 1994
Duration
6 years
Inventor
- 1MARVIN J. MOLNY
Record Details
- Patent number
- US 5341681
- Application
- 00712584
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
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