Remote Concentrated Ammeter Reading System

In this paper,the principle of Spread Spectrum Communication and Direct-Sequence Modulation is introduced. The design principle and constitution of Remote Concentrated Ammeter Reading System based on the technique is proposed and the design of Spread Spectrum Communication Unit of Power Line is shown. It is stressed on the Synchronization System of Spread Spectrum Communication Chip and the two processes of Synchronization,manhunt and tracking,are analyzed.