Multi-beam Bathymetry Method Based on Low Autocorrelated Sidelobe Binary Sequences and Its Implementation on FPGA
- DOI
- 10.2991/iiicec-15.2015.329How to use a DOI?
- Keywords
- multi-beam; pulse compression; FPGA; low autocorrelated sidelobe binary sequences
- Abstract
Given the problem that the range resolution is reduced as a result of overcoming the reduction of SNR (Signal to Noise Ratio) of echo signal only by enlarging the pulse length due to deeper water depth and worsened turbidity in multi-beam bathymetry of single frequency pulse, multi-beam bathymetry method based on low autocorrelated sidelobe binary sequences was proposed. Firstly, the principles of multi-beam bathymetry based on low autocorrelated sidelobe binary sequences were discussed, then the SNRs and resolution performances of narrow pulse method and low autocorrelated sidelobe binary sequences method were compared by means of software simulation, and it was verified by a shallow water multi-beam bathymetric system with wide coverage in a test on Songhua Lake. The results show that this method effective increases SNR and improves bathymetry quality at the premise of ensuring the bathymetry accuracy. Finally, a rapid calculation structure based on FPGA was proposed. The results show that this structure which has comparatively small calculation amount makes it possible to realize real-time processing.
- Copyright
- © 2015, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Haisen Li AU - Dong Lu AU - Baowei Chen AU - Tian Zhou PY - 2015/03 DA - 2015/03 TI - Multi-beam Bathymetry Method Based on Low Autocorrelated Sidelobe Binary Sequences and Its Implementation on FPGA BT - Proceedings of the 2015 International Industrial Informatics and Computer Engineering Conference PB - Atlantis Press SP - 1482 EP - 1485 SN - 2352-538X UR - https://doi.org/10.2991/iiicec-15.2015.329 DO - 10.2991/iiicec-15.2015.329 ID - Li2015/03 ER -