2.2.6 Frequency Agility 频率捷变 From one coherent processing interval to the next, the radar can change its carrier frequency without changing its range resolution properties. This type of wideband signal is called frequency agility. The agility band is limited by the desi ...
Stanford的GPS实验室( http://waas.stanford.edu/index.html )破解了北斗系统的伪随机噪声(Pseudo Random Noise,PRN)码,其中一位关键的成员是来自清华大学的才女Grace Xingxin Gao,她的博士论文《Towards navigation based on 120 satellites analyzing the new signals》就是以PRN码的破解为主题的。她的主页: ht ...
2.2 Radar Constraints ELINT signals of interest include radar signals of all types. Sometimes, people concerned about ELINT attribute properties to radar signals that are contrary to the constraints under which radar systems must function. Avoiding this pitfall is an ...