projected
Main Department of Navigation & Oceanography of the USSR Ministry of Defence.
2006-05-08
true
false
http://www.opengis.net/def/crs/EPSG/0/3388
Pulkovo 1942 / Caspian Sea Mercator
Azerbaijan - offshore; Kazakhstan - offshore; Russian Federation - Caspian Sea; Turkmenistan - offshore.
46.95
53.93
37.35
46.97
OGP
2014-05-01
false
false
http://www.opengis.net/def/area/EPSG/0/1291
Asia - FSU - Caspian Sea
Nautical charting and marine navigation.
conversion
Main Department of Navigation & Oceanography of the USSR Ministry of Defence.
2006-05-08
true
false
http://www.opengis.net/def/coordinateOperation/EPSG/0/19884
Caspian Sea Mercator
Azerbaijan - offshore; Kazakhstan - offshore; Russian Federation - Caspian Sea; Turkmenistan - offshore.
46.95
53.93
37.35
46.97
OGP
2014-05-01
false
false
http://www.opengis.net/def/area/EPSG/0/1291
Asia - FSU - Caspian Sea
Nautical charts and navigation
ISO 1000.
1995-06-02
false
http://www.opengis.net/def/uom/EPSG/0/9001
metre
Also known as International metre. SI standard unit.
length
0
This was the method name used prior to October 2010. However it is ambiguous as it is also applicable to variant C (method code 1044).
EPSG guidance note #7-2, http://www.epsg.org
2010-11-03
true
false
true
For Projected Coordinate System Pulkovo 1942 / Mercator Caspian Sea
Parameters:
Ellipsoid Krassowski 1940 a = 6378245.00m 1/f = 298.300
then e = 0.08181333 and e^2 = 0.00669342
Latitude of first SP = 42°00'00"N = 0.73303829 rad
Longitude of natural origin = 51°00'00"E = 0.89011792 rad
False Eastings FE = 0.00 m
False Northings (at equator) FN = 0.00 m
Forward calculation for:
Latitude = 53°00'00.00"N = 0.9250245 rad
Longitude = 53°00'00.00"E = 0.9250245 rad
gives
ko = 0.744260894
Easting E = 165704.29 m
Northing N = 5171848.07 m
Reverse calculation for same easting and northing first gives :
t = 0.336391288
chi = 0.921795958
Latitude = 53°00'00.000"N
Longitude = 53°00'00.000"E
http://www.opengis.net/def/method/EPSG/0/9805
Mercator (variant B)
Used for most nautical charts.
Note: These formulas have been transcribed from EPSG Guidance Note #7-2. Users are encouraged to use that document rather than the text which follows as reference because limitations in the transcription will be avoided.
The formulas to derive projected Easting and Northing coordinates are:
ko = cos(latSP1)/(1 - e^2*sin^2(latSP1))^0.5
where latSP1 is the absolute value of the first standard parallel (i.e. positive).
E = FE + a*ko(lon - lonO)
N = FN + a*ko* ln{tan(pi/4 + lat/2)[(1 - esin(lat))/(1 + esin(lat))]^e/2} where logarithms are natural.
The reverse formulas to derive latitude and longitude from E and N values are:
lat = chi + (esq/2 + 5e^4/24 + e^6/12 + 13e^8/360) sin(2chi)
+ (7e^4/48 + 29e^6/240 + 811e^8/11520) sin(4chi)
+ (7e^6/120 + 81e^8/1120) sin(6chi) + (4279e^8/161280) sin(8chi)
where chi = pi/2 - 2 arctan t
t = B^((FN-N)/a*ko)
B = base of the natural logarithm, 2.7182818...
and ko is calculated as for the forward transformation above.
lon = ((E - FE)/a*ko) + lonO
42
EPSG guidance note number 7.
2009-06-02
true
false
For a conic projection with two standard parallels, this is the latitude of one of the parallels of intersection of the cone with the ellipsoid. It is normally but not necessarily that nearest to the pole. Scale is true along this parallel.
http://www.opengis.net/def/parameter/EPSG/0/8823
Latitude of 1st standard parallel
51
Abbeviated as "CM".
Abbreviation for "Central Meridian".
EPSG guidance note number 7.
2002-06-22
false
The longitude of the point from which the values of both the geographical coordinates on the ellipsoid and the grid coordinates on the projection are deemed to increment or decrement for computational purposes. Alternatively it may be considered as the longitude of the point which in the absence of application of false coordinates has grid coordinates of (0,0). Sometimes known as "central meridian (CM)".
http://www.opengis.net/def/parameter/EPSG/0/8802
Longitude of natural origin
0
This alias applies only in the case of projection methods which have an axis positive west, e.g. Transverse Mercator (South Orientated).
EPSG guidance note number 7.
2002-07-31
false
Since the natural origin may be at or near the centre of the projection and under normal coordinate circumstances would thus give rise to negative coordinates over parts of the mapped area, this origin is usually given false coordinates which are large enough to avoid this inconvenience. The False Easting, FE, is the value assigned to the abscissa (east or west) axis of the projection grid at the natural origin.
http://www.opengis.net/def/parameter/EPSG/0/8806
False easting
0
This alias applies only in the case of projection methods which have an axis positive south, e.g. Transverse Mercator (South Orientated).
EPSG guidance note number 7.
2002-07-31
false
Since the natural origin may be at or near the centre of the projection and under normal coordinate circumstances would thus give rise to negative coordinates over parts of the mapped area, this origin is usually given false coordinates which are large enough to avoid this inconvenience. The False Northing, FN, is the value assigned to the ordinate (north or south) axis of the projection grid at the natural origin.
http://www.opengis.net/def/parameter/EPSG/0/8807
False northing
geographic 2D
This name is ambiguous as it is also used for several CRSs.
Various industry sources.
2008-09-24
true
false
http://www.opengis.net/def/crs/EPSG/0/4284
Pulkovo 1942
Extended to Eastern Europe through Uniform Astro-Geodetic Network (UAGN) of 1956 - see CRS code 4179.
Armenia; Azerbaijan; Belarus; Estonia - onshore; Georgia - onshore; Kazakhstan; Kyrgyzstan; Latvia - onshore; Lithuania - onshore; Moldova; Russian Federation - onshore; Tajikistan; Turkmenistan; Ukraine - onshore; Uzbekistan.
19.57
-168.97
35.14
81.91
OGP
2014-05-01
false
false
http://www.opengis.net/def/area/EPSG/0/2423
Europe - FSU onshore
Area crosses 180-degree meridian.
Geodetic survey.
ellipsoidal
OGP
2008-06-23
false
http://www.opengis.net/def/cs/EPSG/0/6422
Ellipsoidal 2D CS. Axes: latitude, longitude. Orientations: north, east. UoM: degree
Coordinates referenced to this CS are in degrees. Any degree representation (e.g. DMSH, decimal, etc.) may be used but that used must be declared for the user by the supplier of data. Used in geographic 2D coordinate reference systems.
http://www.opengis.net/def/axis/EPSG/0/106
Lat
north
http://www.opengis.net/def/axis/EPSG/0/107
Long
east
geodetic
2008-09-24
false
http://www.opengis.net/def/datum/EPSG/0/6284
Pulkovo 1942
Topographic mapping.
Fundamental point: Pulkovo observatory. Latitude: 59°46'18.550"N, longitude: 30°19'42.090"E (of Greenwich).
1942-01-01
Cartesian
OGP
2006-07-30
false
http://www.opengis.net/def/cs/EPSG/0/4534
Cartesian 2D CS. Axes: northing, easting (no abbrev). Orientations: north, east. UoM: m.
Used in projected coordinate reference systems for nautical charting.
http://www.opengis.net/def/axis/EPSG/0/183
none
north
http://www.opengis.net/def/axis/EPSG/0/184
none
east