By Jiadong Sun, Jingnan Liu, Shiwei Fan, Feixue Wang
These lawsuits current chosen learn papers from CSNC2016, held in the course of 18th-20th may perhaps in Changsha, China. The topic of CSNC2016 is sensible Sensing, shrewdpermanent notion. those papers talk about the applied sciences and purposes of the worldwide Navigation satellite tv for pc approach (GNSS), and the most recent growth made within the China BeiDou process (BDS) particularly. they're divided into 12 themes to check the corresponding periods in CSNC2016, which generally coated key issues in GNSS. Readers can know about the BDS and maintain abreast of the newest advances in GNSS thoughts and functions.
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Additional info for China Satellite Navigation Conference (CSNC) 2016 Proceedings: Volume I
Acknowledgments This work is supported by the National Natural Science Foundation of China (Grant Nos. 11473045, 11403045). References 1. Lanyi GE, Roth T (1988) A comparison of mapped and measured total ionospheric electron content using global positioning system and beacon satellite observations. Radio Sci 23(4):483–492 2. Coco DS, Coker C, Dahlke SR, Clynch JR (1991) Variability of GPS satellite differential group delay biases. IEEE Trans Aerosp Electron Sys 27(6):931–938 3. Sardon E, Rius A, Zarraoa N (1994) Estimation of the transmitter and receiver differential biases and the ionospheric total electron content from global positioning system observations.
2, we can get the geometric relationships as Dq ¼ 2h sinðeÞ. The flow chart in Fig. 3 demonstrates how to measure the height from the sea surface to the receiver. The speciﬁc process is as follows: 1. First got the measured data, including L1 carrier, CA code data, receiver and satellite position, and speed information. 2. According to the observation time, or the position and velocity information of the receiver and the satellite, calculated the position of the specular reflection point and reflection angle.
The structure of the Doppler frequency offset correction module as shown in Fig. 8. A Spread Spectrum Communication Method Based on GNSS … 23 For the “Ground station—GEO Satellite—Remote Station” link, frequency of uplink and downlink are as follows: fu0 ¼ fu þ Dfu ð6Þ fd0 ¼ fd þ D fd ð7Þ fu , nominal frequency of uplink; fd , nominal frequency of downlink; Dfu , frequency offset of uplink; Dfd , frequency offset of downlink. Frequency of uplink is corrected to nominal value fu frequency pre-bias at the transmitting end; Frequency of downlink is corrected to actual value fd0 at the receiving end.
China Satellite Navigation Conference (CSNC) 2016 Proceedings: Volume I by Jiadong Sun, Jingnan Liu, Shiwei Fan, Feixue Wang