中文摘要：

针对CHESS系统核心技术差分调频算法中G函数存在的缺点，提出一种新的G函数算法，其中频率转移函数采用了模糊算法、选择算法和复杂的分组算法．分组算法中的频率组作为调频状态量，组内再确定频率点．模糊算法和选择算法保证了转移函数的复杂度，改善了跳频序列的随机性和均匀性，增强了系统的隐蔽性和抗跟踪性．

英文摘要：

A novel G function algorithm for CHESS radio system is proposed, which uses freqency group as frequency hopping state and then chooses freqency in group. Fuzzy algoritm and selective algorithm are also employed to gruantee the complexity of freqency transition function. By combining fuzzy system, selective algorithm and complex grouping, this algorithm archieves to improve the fuzzy system, selective algorithm and complex groupin, this algorithm archieves to improve the randomicity and uniformity of frequency-hopping, increase algorithm complexity as it strenghthens the concealment of the system and its traace resistance.