We should expect that more capable follow-on to the SC-19 anti-satellite weapon will allow the PLA to target even higher orbit satellites, like our critical GPS navigation and radar surveillance satellites.

CENTERFORSECURITYPOLICY: China's one world?

Lasting until officials give the all-clear, the modifications are being made to increase safety should there be problems with navigation systems or if radar screens go dark.

CNN: Page 4

The aircraft has terrain-following radar and GPS satellite navigation.

BBC: Profile: B-1 bomber

Within a few years, the lab developed radar systems used for naval navigation, weather prediction, and the detection of bombers and U-boats.

NEWYORKER: Groupthink

S-class is an example, with an onboard navigation system to map your route, radar to watch the road ahead and automatic cruise control.

ECONOMIST: Luxury cars

In a large-scale experiment overseen by the Federal Aviation Administration , UPS is installing a computer navigation system on all 107 of its Boeing 757s and 767s that allows pilots to "see" other jets without radar.

FORBES: Magazine Article