Atomic gravity gradient meter is based on two atomic gravity meteσrs placed vertically or horizontally to measure the gravity gradient value.
The atomic absolute gravimeter is a novel quantum gravity sensor that uses lasers t'o manipulate the interference of free-falling atoms in an ultra-high vacuum chamber and extr acts absolute gravity acceleration information from the interferen ce fringes.
Atomic gravimeters have no mechanical moving parts and can perform long-term co×ntinuous gravity observations.