1results about How to "Applicable frequency range is wide" patented technology

This invention addresses the technical problems of insufficient vibration noise suppression and limited measurement accuracy in existing cold atom interferometric gravimeters by proposing a cold atom interferometric gravimeter and its gravity measurement method that uses a laser interferometer to monitor vibration noise. The invention includes a laser interferometer system, a Raman laser system, a cold atom interferometer physical system, and a vibration isolation platform. The laser interferometer system is mounted on the vibration isolation platform, and the cold atom interferometer physical system is positioned above the laser interferometer system with their gravity sensing axes aligned. The Raman laser output from the Raman laser system enters the laser interferometer system as its working light source. This invention utilizes a dual-frequency laser interferometer to directly monitor the vertical displacement of the Raman laser reflector, achieving precise filtering of vibration noise across a wide frequency range, improving the measurement accuracy of the cold atom interferometric gravimeter, reducing accuracy drift, and expanding the applicable frequency range.