A Multipath Cancellation Method Based on TK Operator for BOC Signals

• DOI: 10.4028/www.scientific.net/amr.680.454
• Publication Date: 2013-04-25T07:04:39Z
• Authors: Zhong Liang Deng; Lei Yang; Lu Yin; Yue Xi
• Keywords: Multipath mitigation

The new generation of global navigation satellite systems will apply binary offset carrier (BOC) modulation technique, which can efficiently split the spectrums signals using same frequency so as to reduce interferences among different systems. But autocorrelation function BOC modulated has drawback multimodality, it’s very hard synchronize right peak when acquiring and tracking signals, especially under low SNR circumstances, decrease positioning accuracy even lead wrong results. Meanwhile, if there are multipath mixed in receiving signal, curve be greatly distorted, number side-peak also increase exaggeratedly, could deteriorate situation mentioned above. A cancellation method based on TK (Teager-Kaiser) operator is proposed this article, not only detect curve, but eliminate all other signals. As a result, avoid false lock code phase guarantee high precision fix