CAJ | 학술논문

为了提高DS/FH混合扩频信号的捕获速度，提出了一种将DS/FH信号中三维搜索转化为二维搜索的快速捕获方案。通过对搜索过程的详细分析，推导出在单、双驻留条件下的平均捕获时间数学表达式以及高斯信道下系统的检测性能计算公式。理论推导与仿真结果表明：相对于传统的捕获方式，该方案有效地缩短了系统的平均捕获时间，具有更强的抗噪性能，适用于存在较强噪声的复杂通信环境。
위료제고DS/FH혼합확빈신호적포획속도，제출료일충장DS/FH신호중삼유수색전화위이유수색적쾌속포획방안。통과대수색과정적상세분석，추도출재단、쌍주류조건하적평균포획시간수학표체식이급고사신도하계통적검측성능계산공식。이론추도여방진결과표명：상대우전통적포획방식，해방안유효지축단료계통적평균포획시간，구유경강적항조성능，괄용우존재교강조성적복잡통신배경。
To improve the acquisition performance of DS/FH system,a new method combining rapid frequency i-dentification with fast PN code acquisition algorithm is presented . With this acquisition method,the traditional 3D DS/FH hybrid signal acquisition is converted to 2D acquisition,and the process of the scheme is analyzed . The-oretical deduction and simulation result show that compared with traditional DS/FH hybrid signal acquisitionscheme the mean acquisition time(MAT)of the proposed scheme is effectively reduced,it has better anti-noise performance and can be applied in complex communiction environment with existance of strong noise .