TY - GEN
T1 - Lidar data acquisition system for detecting atmospheric temperature and extinction coefficient
AU - Chen, Wenbo
AU - Guo, Pan
AU - Chen, Siying
AU - Zhang, Yinchao
AU - Ge, Xianying
AU - Cui, Xiao
AU - Bu, Zhichao
PY - 2011
Y1 - 2011
N2 - Digital data acquisition system is a key part of the whole lidar system, which plays an important role in ensuring detecting accuracy and is the emphasis of this paper. Lidar system could detect both Raman and Mie backscattering signal simultaneously. A digital data acquisition system is designed to capture the signal in this paper. A FPGA chip is used as an essential part in the digital data acquisition system to control time sequence and process capturing data. Then the data is transmitted into the computer through a USB interface, and displayed in the real-time by dedicated software. Three channels of the system can be programmed separately to measure Mie and Raman scattering signal simultaneously within a single measurement. Moreover, acquisition resolution can be chosen among 15m, 30m and 45m. Meanwhile, some other detecting parameters can also be specified, such as height layers and so on. In the aspect of communicating with PC, a Cypress USB CY7C68013A chip is used in this design. The interface is set to work in Slave FIFO mode in the USB firmware, by which FPGA can control USB easily, just like controlling a normal external FIFO. Usually, USB interface can transmit the data faster and more convenient than other PC interfaces. Results of experiments demonstrate that the digital data acquisition system works correctly and accurately.
AB - Digital data acquisition system is a key part of the whole lidar system, which plays an important role in ensuring detecting accuracy and is the emphasis of this paper. Lidar system could detect both Raman and Mie backscattering signal simultaneously. A digital data acquisition system is designed to capture the signal in this paper. A FPGA chip is used as an essential part in the digital data acquisition system to control time sequence and process capturing data. Then the data is transmitted into the computer through a USB interface, and displayed in the real-time by dedicated software. Three channels of the system can be programmed separately to measure Mie and Raman scattering signal simultaneously within a single measurement. Moreover, acquisition resolution can be chosen among 15m, 30m and 45m. Meanwhile, some other detecting parameters can also be specified, such as height layers and so on. In the aspect of communicating with PC, a Cypress USB CY7C68013A chip is used in this design. The interface is set to work in Slave FIFO mode in the USB firmware, by which FPGA can control USB easily, just like controlling a normal external FIFO. Usually, USB interface can transmit the data faster and more convenient than other PC interfaces. Results of experiments demonstrate that the digital data acquisition system works correctly and accurately.
KW - CY7C68013A
KW - FPGA
KW - lidar data acquisition
KW - multi-channel acquisition
UR - http://www.scopus.com/inward/record.url?scp=84862965101&partnerID=8YFLogxK
U2 - 10.1117/12.904813
DO - 10.1117/12.904813
M3 - Conference contribution
AN - SCOPUS:84862965101
SN - 9780819488428
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - 2011 International Conference on Optical Instruments and Technology
PB - SPIE
T2 - 2011 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems
Y2 - 6 November 2011 through 9 November 2011
ER -