12 citations · 20 across the 4 of their papers we have counts for
4 papers
A Simple yet Effective Subway Self-positioning Method based on Aerial-view Sleeper Detection
Jiajie Song, Ningfang Song, Xiong Pan +3
With the rapid development of urban underground rail vehicles,subway positioning, which plays a fundamental role in the traffic navigation and collision avoidance systems, has beco…
Measurement of frequency sweep nonlinearity using atomic absorption spectroscopy
Ningfang Song, Xiangxiang Lu, Xiaobin Xu +4
A low cost scheme to determine the frequency sweep nonlinearity using atomic saturated absorption spectroscopy is demonstrated. The frequency modulation rate is determined by direc…
A phase-locked laser system based on modulation technique for atom interferometry
Wei Li, Xiong Pan, Ningfang Song +2
We demonstrate a Raman laser system based on phase modulation technology and phase feedback control. The two laser beams with frequency difference of 6.835 GHz are modulated using…
A modified Michelson interferometer type Raman laser system for atom interferometers
Ningfang Song, Xiangxiang Lu, Wei Li +5
We have developed a modified Michelson interferometer type Raman laser system to manipulate cold 87 Rb atoms to interfere. A frequency modulated continuous wave technique was intro…