Quick and accurate acquest of signal is critical for the utility of an LPI radar. 准确、快速的扩频码同步是编码LPI雷达系统实用的前提。
The basic dimensionality model is also given, and features of sharing information are analyzed with the model. Third, information acquest and cognition are distinguished to establish the information cognition level model in mathematics. 建立了信息认知层次模型,区分了信息获知与信息认识,并进行了相关数学定义。