线性调频调制的优点是：不须在接收端添加均衡滤波器，也不须进行扩频编码。
Merits of the Linear FM are that it is not necessary to have an equalizer or the spread spectrum code modulation.
本设计选择采用的扩频技术为线性调频技术，它解决了信号在10KV电力线这样恶劣的通信环境中的传输问题；
The design select the chirp as the spread spectrum technology, which resolve the problem of the signal transmission in such adverse communication circumstances as 10KV power line;
该方法利用线性调频扩频技术进行通信并实现测距；
It uses Chirp Spread Spectrum technique to communicate and range.
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