TY - GEN
T1 - Three dimensional modeling of GNSS ocean reflection signal
AU - Qi, Yongqiang
AU - Zhang, Bo
AU - Yang, Dongkai
AU - Zhu, Yunlong
AU - Li, Bowen
AU - Bo, Peng
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2016/11/1
Y1 - 2016/11/1
N2 - In the application of GNSS-R technology, the reflection signal source is needed to test the receiver in order to reduce costs. The signal model is the core of GNSS-R signal source. In this paper, GPS reflection signal from sea surface is taken as the research object. Firstly, the appropriate signal phases are selected according to the correlation power distribution of the reflection signal in the ZV model. Then the equations are solved. And the result curve of the equations is approximated by numerical fitting method, so as to obtain the normalized amplitude corresponding to different phases. Finally, the time delay and doppler frequency offset of the specular point signal, with respect to the direct signal, are calculated. Thereby, three-dimensional parameters of the 100 reflection signals, namely the pseudo-code delay, Doppler frequency and amplitude, could be obtained. And it is verified by the correlation processing, which show the effectiveness of the method.
AB - In the application of GNSS-R technology, the reflection signal source is needed to test the receiver in order to reduce costs. The signal model is the core of GNSS-R signal source. In this paper, GPS reflection signal from sea surface is taken as the research object. Firstly, the appropriate signal phases are selected according to the correlation power distribution of the reflection signal in the ZV model. Then the equations are solved. And the result curve of the equations is approximated by numerical fitting method, so as to obtain the normalized amplitude corresponding to different phases. Finally, the time delay and doppler frequency offset of the specular point signal, with respect to the direct signal, are calculated. Thereby, three-dimensional parameters of the 100 reflection signals, namely the pseudo-code delay, Doppler frequency and amplitude, could be obtained. And it is verified by the correlation processing, which show the effectiveness of the method.
KW - GNSS
KW - ZV model
KW - data fitting
KW - reflection signal
UR - https://www.scopus.com/pages/publications/85007453105
U2 - 10.1109/IGARSS.2016.7729487
DO - 10.1109/IGARSS.2016.7729487
M3 - 会议稿件
AN - SCOPUS:85007453105
T3 - International Geoscience and Remote Sensing Symposium (IGARSS)
SP - 1895
EP - 1898
BT - 2016 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2016 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 36th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2016
Y2 - 10 July 2016 through 15 July 2016
ER -