Digital lock-in amplifier for space rubidium atomic clock.

@article{Jain2021DigitalLA,
  title={Digital lock-in amplifier for space rubidium atomic clock.},
  author={Pratik Jain and Priyanka Priya and T. V. S. Ram and K. S. Parikh and Thejesh N. Bandi},
  journal={The Review of scientific instruments},
  year={2021},
  volume={92 12},
  pages={
          124705
        }
}
In many low-noise applications, extracting information from the extremely noisy signal is required. This task can be accomplished by a lock-in amplifier if the frequency of the signal is known before detection. Error signal output from the physics package of the rubidium atomic clock (RbAC) is one of those noisy signals. A lock-in amplifier extracts the desired information from such a signal as the frequency of the error signal is known beforehand. The Space Applications Centre of the Indian… 
Advanced space rubidium atomic frequency standard for satellite navigation
  • T. Bandi, N. M. J. D. M. A. R. P. B. S. B. P. P. K. A. S. A. R. Desai Kaintura Attri Saiyed Sharma-Kesarkar Sinha , K. Parikh
  • Physics
    GPS Solutions
  • 2022
NavIC (Navigation with Indian Constellation) is a regional satellite navigation system called Indian Regional Navigation Satellite System (IRNSS). The NavIC is presently composed of seven operational

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