一种BOC(n,n)移位相关无模糊捕获方法及装置

• Format: Patent
• Language: Chinese
• Published: 19.02.2021
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

本发明提出一种BOC(n,n)移位相关无模糊捕获方法，包括：对BOC信号进行下变频处理得到中频信号；将中频信号与本地载波混频，得到同相支路信号和正交支路信号；将本地PRN序列分割为奇支路信号和偶支路信号；将奇支路信号与复信号进行相乘运算，得到第一信号；将第一信号分别超前四分之一个码片和滞后四分之三个码片，分别得到第二信号和第三信号；对第二信号和所述第三信号进行相干积分运算，得到第四信号和第五信号；根据重构相关规则，得到第六信号和第七信号，根据检测统计量公式，得到无模糊的检测统计量；判断检测统计量是否大于设定的检测门限值，若是，则说明信号被准确捕获。 The invention provides a no-fuzzy capture method and device of BOC (n, n) shift correlation. The no-fuzzy capture method comprises the steps that a BOC signal is subject to down-conversion processingto obtain an intermediate frequency signal; the intermediate frequency signal is mixed with a local carrier to obtain a same phase branch signal and an orthogonal branch signal; local PRN sequence isdivided into an odd branch signal and an even branch signal; the odd branch signal and a complex signal are multiplied to obtain a first signal; the first signal is divided into an advanced quarter code chip and delayed three quarters of code chips to respectively obtain a second signal and a third signal; a coherent integral operation is perform