据美国《防务新闻》周刊网站3月6日报道，美国陆军4日宣布，批准全速生产柯林斯航空航天公司研发的车载定位、导航和授时 (PNT)系统MAPS。该系统对在没有全球定位系统（GPS）的环境下作战至关重要。

We’ve all experienced that moment of frustration when the GPS glitches and you miss an exit on the highway. The team at Tern ...

It can all look quite confusing, so we’re going to demystify the art of how to navigate using a map and compass and let you ...

While fences can typically keep your dog contained within your yard, if you have a pup who’s a talented escape artist, you might want to consider a dog GPS tracker. These devices can help you ...