最近一贴清华美女破译北斗信号获美奖励被大声嘈杂，本来一个专业问题，变成爱国问题，十足的无聊。
       原帖说她在中国掌握核心技术，试问一个硕士掌握了核心技术，是说明保密的无能还是技术人员的无能？
       她研究的不仅仅是北斗、Galileo还有GPS ，为什么仅仅突出所谓的北斗系统导航信号？
       看看她的个人网页一目了然。
     http://www.stanford.edu/~gracegao/
ResearchCharacterizing GPS Signal-in-space ErrorsDeveloping top-down and bottom-up algorithms to characterize GPS signal-in-space errors. Data mining GPS ephemeris data of the past decade based on a global receiver network of over 300 receivers. GNSS Monitoring FacilityBuilding system to monitor Global Navigation Satellite Systems in real-time to detect power failure, changes in signal transmission, ionosphere scintillation, etc. Multi-Constellation AnalysisAnalyzing interoperability of multiple GNSS constellations. Evaluating the overall performance of the multi-constellation system and the potential interference among the constellations. Pulsed Interference Analysis and MitigationAnalyzed Distance Measuring Equipment (DME) and Tactical Air Navigation (TACAN) interference environments and their degradation of Global Positioning System (GPS) L5 and Galileo E5a/E5b signals. Investigated techniques for pulsed interference mitigation to improve coexistence of GPS/Galileo with DME/TACAN systems. Compass-M1 Code AnalysisReverse-engineered pseudorandom noise (PRN) codes in all frequency bands (E2, E5b & E6) of the first Chinese global navigation satellite Compass-M1. Proved that all Compass-M1 codes are Gold codes and derived their code generators as linear shift feedback registers. Applied PRN codes in software receiver to acquire and track Compass-M1 satellite. Galileo GIOVE-A Code AnalysisReverse-engineered pseudorandom noise (PRN) code generators of the first European global navigation satellite GIOVE-A. Studied pseudorandomness and correlation properties of PRN codes to evaluate their processing gain and tolerance to noise and interference.