--- Begin Forwarded Message ---
Date: Thu, 19 Apr 2001 09:50:10 +0300
From: lauri <[log in to unmask]>
Subject: Re: Russian map coordinate system <fwd>
Sender: lauri <[log in to unmask]>
> Subject: Russian map coordinate system
> For a client who needs to know right away, we are trying to determine
> which map coordinate system would be used on a Russian map of Turkey. We
> have learned from "World Mapping Today" (Parry and Perkins, 2d ed.) that
> "from 1942 maps have been published using the Krassovsky ellipsoid, the
> Gauss conformal projection, and the Kronstadt datum." Can anyone confirm
> this information (about Russian maps of Turkey), or provide any other
> insights on this question?
It seems to be true
Correct transcription/transliteration russian-english is
Krassovski and Kronshtadt
Additional remarks:
Soviet maps are not very correct:
- KGB censorship had changed them a lot (+/- 3 km shifts are usual)
- maps are mostly given in Lat-Long values of Krassovski-42 (Pulkovo-42) (for civil usage maps) and/or in X-Y metric values of Gauss-Krassovski (GK-42) (for military usage maps).
- for getting correct values using GK-42 maps we always need additional calculations using Northing and Easting Difference Tables (also corrects KGB shift).
- Some maps are using Krassovski system with different modifications - Krassovski/Pulkovo 1963; Krassovski/Pulkovo 1922
- Height from see level (MSL; ASL) has different meaning for every country, for example
in Estonia we use Baltic Height System (control point is in Baltic sea, Gulf of Finland, Kronshtadt island near St. Petersburg, Russia). WGS-84 zero level in Estonia is 17...22 m under Baltic sea level.
Krassovski - name of the author - russian geodesist F. N. Krassovski
Different sources are using different transliteration: Krasovski; Krassovski; Krasovskij; Krassovskij; Krasovsky; Krassovsky; Krasovskii; Krassovskii;
Krasovskiy; Krassovskiy
Pulkovo - observatory near Sankt Petersburg (Leningrad; Petrograd) Russia, Pulkovo meridian was used as basement for
this system - horisontal datum
Different sources are using different transliteration: Pulkovo; Pulkova
Kronshtadt - Military (Navy) base and city on Kronshtadt island in Gulf of Finland near St. Petersburg - Sea level "0" for Russia and former
USSR - vertical datum
Gauss-Krassovski (GK-42) - US DoD and NATO are using the name "Warsaw Pact Crid" for it.
Links which can help:
Coordinate Systems used in Estonia
http://www.geo.ut.ee/~raivo/ESTCOORD.HTML
Bursa-Wulff transformation parameters for major geodetic datums used in Estonia
http://www.geo.ut.ee/~raivo/bursa.html
Other reference system and projections used in Hungary
http://lazarus.elte.hu/gb/geodez/geod7.htm
Reference Ellipsoids used in Geodesy
http://dgfi.badw-muenchen.de/geodis/REFS/ellipsoid.html
DEFENSE MAPPING AGENCY TECHNICAL MANUAL 8358.1
DATUMS, ELLIPSOIDS, GRIDS, AND GRID REFERENCE SYSTEMS
http://164.214.2.59/GandG/tm83581/tr83581c.htm
PARAMETERS OF EARTH 1990 PZ-90
http://www.rssi.ru/SFCSIC/pz90_e.html
Unfortunately the best sources are now deleted from Internet
DoD DoA HQ Field Manuals (FM)
34-85, Conversion of WARSAW PACT Grids to UTM Grids, 25 September 1981.
34-85-1, GK Conversion (Mideast), 2 February 1983 w/ch 1, 30 September 1983.
But you can ask them or still search similar documents at http://www.adtdl.army.mil/
With best regards
Mr. Lauri Kreen
[log in to unmask]
Systems Engineer of Surveillance and Navigation, Head of Subdivision
Seire- ja navigatsioonisüsteemide insener, talituse juhataja
Lennuliiklusteeninduse AS / Estonian Air Navigation Services
Lennujaama tee 2; P. O. Box 9
EE-11101; Tallinn; ESTONIA
Tel. +3726258226
GSM +3725174033
Fax +3726258209; +3726258200
2001-04-19
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