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本文描述一个用于伪噪声编码双相调制通信系统内的线性调制系统。文中说明了如何综合这些系统,并提出一个自适应天线阵列和信号波形间相互影响的系统概述。文中描述了一个实验系统并给出了该系统的典型性能。为了使自适应天线阵列消除干扰,混合系统只要求一个很适中的扩频比,如5∶1。在码定时捕捉相位期间以及在码锁定以后,综合系统获得自适应天线阵列的干扰保护。
This article describes a linear modulation system for use in pseudo-noise coded bi-phase modulation communication systems. The article explains how to integrate these systems and presents a systematic overview of adaptive antenna arrays and signal waveforms. The article describes an experimental system and gives the typical performance of the system. To eliminate interference from the adaptive antenna array, the hybrid system only requires a very modest spreading ratio, such as 5: 1. During the code timing capture phase and after the code lock, the integrated system gains interference protection of the adaptive antenna array.