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1)  hybrid DS-SFH spread spectrum communication
混合直扩和慢跳频扩频系统
2)  DS/FH spread spectrum communication system
直扩/跳频混合扩频系统
1.
DS/FH spread spectrum communication system is a system based on direct sequence spread spectrum communication system and frequency hopping spread spectrum communication system.
直扩/跳频混合扩频系统是采用直扩系统和跳频系统相结合的技术。
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3)  hybrid direct sequence/frequency hopping
混合直扩跳频
1.
A hybrid direct sequence/frequency hopping (DS/FH) scheme is proposed for optical code division multiple access (OCDMA) system.
提出了一种混合直扩跳频光纤码分多址 (DS/FH OCDMA)系统的实现方法。
4)  FH/DS
跳频/直扩
1.
A New Type Frequency Hopping and Direct-sequence Spread-spectrum (FH/DS)Communication System;
一种新型跳频/直扩(FH/DS)通信系统
2.
An algorithm of DOA estimation for multicomponet FH/DS signals based on spatial time-frequency analysis is proposed, which can realize exact DOA estimation in underdetermined condition.
提出了一种基于空时频分析的跳频/直扩(Frequency Hopping & Direct Sequence,FH/DS)信号的波达方向(DOA,Direction of Arrival)估计方法,该方法能够在欠定条件下(传感器数目小于信号数目)实现多个FH/DS信号的精确测向。
5)  DS/FH
直扩/跳频
1.
Telemetry Performance Analysis of DS/FH Hybrid Spread Spectrum Signal
直扩/跳频混合扩频信号测量性能分析
2.
According the high dynamic characteristic of TT&C signals,a fast synchronization scheme for DS/FH hybrid spread spectrum signals is proposed.
针对航天测控信号的高动态特点,提出了直扩/跳频混合扩频(DS/FH)测控信号的一种快速同步方案。
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6)  hopping frequency spread spectrum system
跳频扩频系统
补充资料：慢来
1.停一下。 2.缓慢地进行。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
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