GPS和北斗的民用信号都是免费的。

来源: xwu622 2012-12-27 07:51:32 [] [博客] [旧帖] [给我悄悄话] 本文已被阅读: 次 (340 bytes)

"The original GPS design contains two ranging codes: the Coarse/Acquisition (C/A) code, which is freely available to the public, and the restricted Precision (P) code, usually reserved for military applications."

http://en.wikipedia.org/wiki/GPS_signals

所有跟帖: 

所以,准备换白菜价的设备 :) -航母01- 给 航母01 发送悄悄话 (0 bytes) () 12/27/2012 postreply 14:53:52

请您先登陆,再发跟帖!

发现Adblock插件

如要继续浏览
请支持本站 请务必在本站关闭Adblock

关闭Adblock后 请点击

请参考如何关闭Adblock

安装Adblock plus用户请点击浏览器图标
选择“Disable on www.wenxuecity.com”

安装Adblock用户请点击图标
选择“don't run on pages on this domain”