ALAN THOMAS HERRING
Pilots at Crestbrook Dr, Morrison, CO
License number
Colorado A0833008
Issued Date
Aug 2016
Expiration Date
Aug 2017
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
6200 Crestbrook Dr, Morrison, CO 80465
Professional information
Differential Interferometric Ballistic Gravity Measurement Apparatus And Method
US Patent:
5892151, Apr 6, 1999
Filed:
May 21, 1997
Appl. No.:
8/861121
Inventors:
Timothy M. Niebauer - Boulder CO
Alan T. Herring - Morrison CO
Alan T. Herring - Morrison CO
Assignee:
EM-g, Inc. - Lakewood CO
International Classification:
G01M 112
US Classification:
73382R
Abstract:
A differential interferometric ballastic gravity measurement apparatus and method for measuring differential gravity between separate points employs at least two separate gravity sensors having respective free-fall masses capable of independent operation, an arrangement mounting the gravity sensors independent of one another in respective self-leveling states and at separate locations, a fiber optic-guided laser light interferometer coupled to the gravity sensors and adapted to produce a light signal indicative of a single measurement of differential gravity between the separate locations where the gravity sensors are situated, and a processing control system coupled to the gravity sensor and fiber optic-based laser light interferometer for activating independent operation of the gravity sensors and interferometer and for detecting the light signal and producing an electrical signal representing the measurement of differential gravity between the separate locations.