Abstract
Against characteristics of large bandwidth and low SNR belong to the echo signal, and in the application of software radio idea, a wide-band receiver scheme for continuous-wave lidar by combining SW Dual Conversion with IF digital quadrature demodulation structure is presented and realized. The effect of sample rate deviation to velocity accuracy is analyzed, and the compensation measure is raised. Simulation experiments indicate that the demodulation of echo signal to a unified IF signal by SW Dual Conversion solves the difficult problem of direct sampling to wide-band signal due to limited sampling rate, and it has excellent frequency selection. Also, compared with traditional approach and analog quadrature detection mode, the performance has been significantly improved. By using frequency offset correction, Doppler frequency error caused by sampling rate deviations can be eliminated.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Martinussen, H., Aksnes, A., Engan, H.E.: Heterodyne Interferometry for High Sensitivity Absolute Amplitude Vibrational Measurements. In: Proc. of SPIE, vol. 6292, pp. 62920Z-1–11 (2006)
Liu, T.-B.: Design and Implementation of Laser Doppler Velocimeter, pp. 11–31. Dalian University of Technology (2006)
Tian, Z.-S., Wang, H.-H., Li, Q., Wang, Q.: Computational Simulations for Quadrature Sampling of Received Signal in Pulse Coherent Laser Radar. Laser & Infrared 33(1), 28–30 (2003)
Wu, Y.-B., Li, J.-W.: Research on IF Signal Sampling Directly and Digital Coherent Detection. Acta Electronica Sinca 22(10), 105–107 (1994)
Mitola, J.: The Software Radio Architecture. IEEE Communication Magazine, 26–38 (1995)
Werner, C., Heilmann, R., Bogenberger, R.: All Fibre Laser Doppler Anemometer. In: Proc. of SPIE, vol. 5240, pp. 183–190 (2004)
Majumder, Alam, Gangopadhyay: Performance analysis of subcarrier modulated optical frequency modulation with non-uniform laser frequency-modulation response. Optical Engineering 35(3), 741–753 (1996)
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2012 Springer-Verlag GmbH Berlin Heidelberg
About this chapter
Cite this chapter
Wang, J., Wang, C., Lei, T., Song, Z., Hou, M. (2012). A Lidar Receiver for Speed Measurement Based on Software Radio. In: Sambath, S., Zhu, E. (eds) Frontiers in Computer Education. Advances in Intelligent and Soft Computing, vol 133. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-27552-4_120
Download citation
DOI: https://doi.org/10.1007/978-3-642-27552-4_120
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-27551-7
Online ISBN: 978-3-642-27552-4
eBook Packages: EngineeringEngineering (R0)