The invention relates to a method of spread spectrum acquisition, including: first, the receiving end to the current phase of the reference phase, the received spread spectrum sequence in the data frame parallel processing of m road, m road related value; then, calculate m mean L1 value of road related norm; finally, the judgment is greater than the mean a preset threshold value, if it is carried out with false alarm to confirm the acquisition is successful, otherwise the local template with respect to the spreading sequence of sliding M phase, continue to repeat the above steps. The invention also relates to a receiving end corresponding to the method. The invention of the spread spectrum acquisition scheme without increasing the spreading code length, can work in low SNR environment; for multipath channel, the scheme can capture almost the earliest arrival, a larger energy path; in addition, the scheme does not need hardware multiplier and sorting calculation, save a lot hardware resources.
【技术实现步骤摘要】
【技术保护点】
一种扩频捕获方法,其特征在于,包括: 接收端以当前相位为参考相位,并利用本地相关模板,对接收到数据帧中的扩频序列进行m路并行相关处理,得到第一m路相关值,m为大于1的自然数; 计算所述第一m路相关值的L1范数的第一均值; 判断所述第一均值是否大于预设的第一门限值,如果是则进行摒除虚警的处理以确认本次捕获是否成功,否则使所述本地相关模板相对于所述扩频序列滑动m个相位后,重复以上所述步骤。
【技术特征摘要】
【专利技术属性】
技术研发人员:肖振宇,金德鹏,朱晓博,曾烈光,葛宁,
申请(专利权)人:清华大学,
类型:发明
国别省市:11[中国|北京]
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