tag:blogger.com,1999:blog-1509900465677846838.post2727471801756681221..comments2020-10-02T23:38:15.144-04:00Comments on NAS Confusion: Space Based Fallacy deltamike172http://www.blogger.com/profile/03440111329857048591noreply@blogger.comBlogger5125tag:blogger.com,1999:blog-1509900465677846838.post-89821807958998983222013-07-30T02:03:00.247-04:002013-07-30T02:03:00.247-04:00This is cool!This is cool!Amadohttp://bestmemoryfoammattressreviews.us/noreply@blogger.comtag:blogger.com,1999:blog-1509900465677846838.post-50347094341585644052013-04-19T16:47:30.140-04:002013-04-19T16:47:30.140-04:00Comments on the article, and on the comments, in n...Comments on the article, and on the comments, in no particular order.<br /><br />Fusion refers to taking the data from multiple positioning sensors, weighing the accuracy and update rate etc of each, and coming up with the best estimate of the position. Fusion certainly should not lead to targets jumping around, that sounds much more like mosaiced radar. Sounds like on a per-region or per-update the surveillence decides to use a radar track or the ads-b data. Someone did a sales job on that one...<br /><br />NAV CANADA is going to be playing around with space-based ADS-B, no ground stations, I forget the name of the company- aireon or such?<br /><br />I believe DoD/DHS is going to be keeping enough spinny primary radars so that the 'homeland security function' can be maintained relative to border security.<br /><br />For areas beyond the cares of border security, I think that they are pondering using the new (ground based of course) phased-array weather radars to also keep tabs on un-cooperative aircraft (electrical failure, no electrical system, disabled transponder, etc).<br /><br />The reason they are planning on so many ground stations is so that coverage will be much better than with existing radar, down to lower altitudes. Ground station placement will decide how true this is.<br /><br />I more often mull other aspects of nextgen I find troublesome, such as how this critical national-asset infrastructure will be owned and run by a private company (ONLY duty is to the shareholders), and how this public-fund generated data will then be available to only those who can afford to pay for it- ITT gets paid by the FAA to generate the data, then ITT also gets to sell the data.<br /><br />DaveXR650L_Davehttps://www.blogger.com/profile/17285771913490257391noreply@blogger.comtag:blogger.com,1999:blog-1509900465677846838.post-70697393207764001122013-04-11T21:43:03.536-04:002013-04-11T21:43:03.536-04:00ZFW ERAM grinds to a halt on April 21. We trained ...ZFW ERAM grinds to a halt on April 21. We trained all but the last 10% of the workforce before the furlough was official and we were directed to stop training. Now we hope that we will restart in time to just do a mild refresher for most people, train up the last few, and off we go.<br /><br />Of course, if this grinds on for any amount of time without restoring funding for ERAM, we'll be starting all over again...and all that training and overtime goes down the crapper.<br /><br />For those reading this and thinking "Hey, that furlough was over-blown. Nothing has happened in ATC yet, it was all a scare tactic!", just wait until about April 22nd. The first ATC furloughs happen April 21, but will be light since that's a Sunday and the beginning of the pay period...by April 29th (at latest), expect to see some real impact. CenterPuke88https://www.blogger.com/profile/17770056621255249861noreply@blogger.comtag:blogger.com,1999:blog-1509900465677846838.post-57930937825837457362013-04-09T15:10:56.723-04:002013-04-09T15:10:56.723-04:00I've always wandered about the same potential ...I've always wandered about the same potential issues that you listed. It just doesn't sit well to think that the people responsible for safety of everyone "up there", are unable to track someone, without them "flicking the switch" first.<br /><br /><br />One interesting point to note, is that a lot of places outside of the US seem to wholly depend on SSR/MSSR radars for surveillance. It's hard to say whether each country's military plays some role in still keeping an eye out for iffy primary radar returns, but the AIPs sure seem well groomed in stating what equipment is available. What's even more interesting about the wording, is that fairly often, it'll describe the primary radars as not being a usual piece of equipment, in the provision of services...even when available.<br /><br />Perhaps someone who actually works as a controller in such places can confirm it, but the official publications sure clearly give the impression described above.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-1509900465677846838.post-79055055732138738742013-04-09T00:44:56.325-04:002013-04-09T00:44:56.325-04:00My terminal radar facility has recently transition...My terminal radar facility has recently transitioned to using the ADS-B technology known as fusion. Most of the recent technological advancements over the past several years at our facility have truly improved the way we do our jobs. Fusion, on the other hand, has been a major disappointment. <br /><br />A phenomenon known as "stitching" causes radar targets to jump around in random directions. This is due to multiple sensors attempting to display the true position of an aircraft. It seems as though the stitching problem becomes more critical as the aircraft require turns to the final. <br /><br />After observing the "true" position of aircraft for over 30 years using primary ASR, it is a downgrade of technology to use fused radar.<br /><br />One can only hope that the advantages that pilots enjoy using ADS-B outweigh the degradation of radar presentation that terminal radar controllers must endure.kilwerhttps://www.blogger.com/profile/13370340097798093863noreply@blogger.com