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Beidou's composition class
Because I am happy to be engaged in Beidou research in China when I was in Tsinghua University, I don't involve core secrets, and I don't know the core of important data, which has no harm to the cause of Beidou in China, so I can study abroad.

Gao Bo was born in Gao Qian. His father Gao, former executive deputy director of Heilongjiang Provincial Public Security Department; She is also a 200 1 undergraduate graduate of Tsinghua University Precision Instrument Department; Graduated from Tsinghua University Electronic Engineering Department in 2003; Graduated from the Department of Electronic Engineering of Stanford University in 2008.

In 2007, China launched its first satellite, M 1, which belongs to the Beidou-1 system. Gao Bo, who studied in the United States, demodulated the satellite, confirmed all the coding methods of Beidou -M 1 and cracked its code generator. She also applied these pseudo-random numbers to a software receiver to capture and track Beidou -M 1 satellite. Gao Bo not only participated in the Beidou satellite research in the United States, but also published these data as papers in foreign journals. ?

Gaobo will not show mercy because it is a navigation satellite of his motherland. Because at the moment, she is studying for a doctorate at Stanford University, and later she participated in a research project on satellite navigation system funded by the Federal Aviation Administration of the United States. She is a funded student at the 2007 International Navigation Technology Conference.

So she adjusted the three frequency bands (E2, E5b, E6) of all the civil codes broadcast on this satellite M 1, confirmed that all the codes of Beidou -M 1 were gold codes, and cracked that its code generator was a linear shift feedback register. She also applied these pseudo-random numbers to a software receiver to capture and track Beidou -M 1 satellite.

Gao Bo participated in the research and development of Beidou project during her stay in Tsinghua, and the truth of this matter cannot be verified, but even so, she could not have access to the core secrets. Confirmed by professionals, Gaobo only cracked the channel code of Beidou satellite civil short code. These codes are not secret and will be provided to partners after commercialization in the future. It has not caused substantial harm to the security of Beidou-2, especially the security of military applications, and it is extremely difficult to crack military passwords.