Inertial navigation device for ion propulsion driven spacecraft

Instrument for measuring accelerations, particularly gravitation

Laplace gravity gradiometer

Method and apparatus for measuring gravitational acceleration ut

Method and apparatus for measuring gravity with lever arm correc

Method and apparatus for regional gravity surveys using a GPS re

Method for determining the magnitude of earth's gravity

Micro-distance toss-up type absolute gravimeter

Miniature freefall mechanism

Multifold shipboard gravity upgraded with still readings

Nulling and measuring system

Optical fiber gravity meter

Optical fiber gravity meter

Optoelectronic accelerometer

Precision gravity gradiometer optically measuring density...

Proof mass support and sensing system

Proof mass support and sensing system

Real-time self-compensating gravity gradiometer instrument

Ring laser gravity gradiometer

Rotary cam driven free fall dropping chamber mechanism