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Old 26th May 2010, 21:20
  #124 (permalink)  
Alice025
 
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Asked Amelin got a reply.
1./ His original map of heights is not his and is not from paper topography Smolensk data. Those detailed topographic heights' maps are still national secret LOL. Honest, in 1950-s they secreted them all, and these are issued on state demand/order to "those trusted to be knowing" only. So, sorry, Russia and her topography are still loaded with surprises :o)

2./Surprises aren't big; on seeing his map and MAK's map differ greatly btw 1,100m and 1,300m away off from the runway, Amelin went to the place and crawled it in various directions :o), taking photos down from the local hills and all, trying to figure out real angles and bends and heights. Got confused, can be this can be that. Still, vaguely thinks his original map of heights is better. But can't prove it.

3./ His map of heights he took at another forum of inquisitive minds, intellectuals bothering about this and that, and when he saw the MAK map differs, went back to them after explanations - where was their map from.
Answer: Shuttle Radar Topographic Mission SRTM, what shuttle did in Feb 2000, with the help of 2 radio-location sensors SIR-C and X-SAR that the shuttle carried on board. Result of that flight is a digital model of Earth surface (85% of it) (Smolensk in).
NASA worked on the data obtained in 2000 for 2 yrs and came up with intermediary /preliminary version "Version 1, 2003) and final version (Version 2, Feb 2005).

There exist also two formats, in 1 "ange second net" - SRTM-1 (for the US territory) and in 3 "angle second net" (for the rest of the world) - SRTM-3.

NASA

Всего в результате съемки было получено 12 терабайт радиолокационных данных, которые в течении 2 лет проходили обработку специалистами NASA.
Данные SRTM существуют в нескольких версиях: предварительные (версия 1, 2003 г) и окончательная (версия 2, февраль 2005 г).

The shuttle radar topography mission. / Farr Tom G., Hensley Scott, Rodriguez Ernesto, Martin Jan, Kobrick Mike. // CEOS SAR Workshop. Toulouse 26-29 Oct. 1999. Noordwijk. 2000, с. 361-363.
About SRTM data and their import with the help of Arcinfo Workstation. http://gis-lab.info/qa/srtm.html


So, that's where they guys from who Amelin took his original map took it from.

What TAWS uses and MAK uses no idea.
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