모두
← Back to Squawk list
Inflight NEXRAD images may be older than pilots expect, NTSB warns
The mosaic NEXRAD weather radar images that many general aviation pilots get in their cockpits may be 15 to 20 minutes old, even when the image’s timestamp shows it’s only a few minutes old. That’s the takeaway message in a recent National Transportation Safety Board alert based on several recent accidents. The timestamp shown on the image is when the data processing company transmitted that image, the NTSB says. But it can take many more minutes before that to collect the radar imagery from… (www.ntsb.gov) 기타...
Sort type: [Top] [Newest]
You dont have real time. It is delayed too. Real time would require you to have a radar that shows reflectivity.
Thats terrible. When I can get real time radar right on my computer or cell phone thats ridiculous. That needs to be fixed ASAP!
Nothing you get online is real time, whether on computer, cell, tablet, or GPS. It is always 10 or more minutes old, sometimes over an hour.
Since in-aircraft nexrad was introduced about 10 years ago the processing and transmission times have been significantly shortened. If your image is an hour old, there is clearly an equipment problem somewhere along the line. Keep in mind, the various radar images must be composted, then sent to your service provider, then reprocessed and send via satellite to your device. A few minutes consumed by each step all add up to a typical latency of 5-15 minutes. This has not been kept a secret and it is typically described in the device owners manual.
http://www.wright-weather.com/index.php It's as close to the real thing as you can get and as a person who works outside I find their site invaluable. 10 minutes to 1 hour? seriously? are we still using stones and bear skins?
Nice link, useful data supporting your argument, but still not real-time (by definition, since it can display 5 minute old data).
