Von: Ramy Yanetz [mailto:ryan...@yahoo.com] Gesendet: Dienstag, 11. September 2012 01:59
>Now perhaps the butterfly display has indeed a built in filter which >continuously >interpolate the other target position based on changes in my position and >heading, >I cant tell. The significant delay of the Butterfly display reported by Sascha might be a hint that some kind of filtering is implemented. >But whatever it is doing is better than blinking traffic/blinking radar in >XCSoar. I >recommend implementing the same logic in XCSoar. Sorry, I have to disagree. Bad or no reception in some relative positions is an issue of the original FLARM implementation (single antenna) in a carbon fuselage, and not something that can be solved by software. There simply is no FLARM data available at this time, and any display showing a target is simply guessing its position. This guessing may work for centered thermalling, but will definitely be wrong when someone leaves a thermal. If I have to choose between correct and convenient (but incorrect) data, I choose the correct one. >But if this is not a problem with my implementation, am I the only one >noticing it? A possible reason: In Europe pilots started to use FLARM with lower expectations. We used the very simple LED display, and just to get a hint that there is some other glider in an approximate direction was considered useful (there even wasn´t any relative altitude info available in the beginning!) . FLARM was considered as an additional chance to find traffic you might have missed, not as a tool to get situation awareness. And we got used to FLARM limitations, that are clearly stated in the manual by the way. Today we have radar like displays that are great, but may create a false impression and wrong expectations, if people don´t consider the limitations underneath. >I am pretty sure it is not a problem with my powerflarm installation since I >already >tried couple of antenna locations and I can see traffic more than 5 miles >away. Unfortunately, this proves exactly nothing. You may have a range of 5miles in some directions, and not half of a mile in a different direction or to a different aircraft. Even if FLARM range analysis (http://www.flarm.com/support/analyze/index_en.html) shows good range in all directions, it does not mean that you will see any target in that range. Michael PS: Your pictures at soaringcafe are great! ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Xcsoar-user mailing list Xcsoar-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xcsoar-user
