projected
1999-04-22
true
false
http://www.opengis.net/def/crs/EPSG/0/22700
Deir ez Zor / Levant Zone
Replaced by Deir ez Zor / Syria Lambert (EPSG code 22770) from 1973.
Lebanon - onshore. Syrian Arab Republic - onshore.
35.04
42.38
32.31
37.3
OGP
2014-05-01
false
false
http://www.opengis.net/def/area/EPSG/0/1623
Asia - Middle East - Lebanon and Syria onshore
Large and medium scale topographic mapping and engineering survey.
conversion
US Army Map Service projection tables; 1943.
1999-04-22
true
false
34
39
N
37
21
E
http://www.opengis.net/def/coordinateOperation/EPSG/0/19940
Levant Zone
Replaced by projection using full Lambert formula (EPSG code 19948) from 1973.
Lebanon - onshore. Syrian Arab Republic - onshore.
35.04
42.38
32.31
37.3
OGP
2014-05-01
false
false
http://www.opengis.net/def/area/EPSG/0/1623
Asia - Middle East - Lebanon and Syria onshore
Large and medium scale topographic mapping and engineering survey.
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
EPSG guidance note #7-2, http://www.epsg.org
2010-03-01
true
false
true
For Projected Coordinate System: Deir ez Zor / Levant Zone
Parameters:
Ellipsoid Clarke 1880 (IGN) a = 6378249.2 m 1/f = 293.46602
then b = 6356515.000 n = 0.001706682563
Latitude Natural Origin = 34°39'00"N = 0.604756586 rad
Longitude Natural Origin = 37°21'00"E= 0.651880476 rad
Scale factor at origin ko = 0.99962560
False Eastings FE = 300000.00 m
False Northings FN = 300000.00 m
Forward calculation for:
Latitude of 37°31'17.625"N = 0.654874806 rad
Longitude of 34°08'11.291"E = 0.595793792 rad
first gives
A = 4.1067494 * 10e-15 A?=111131.8633
B?= 16300.64407 C?= 17.38751 D?= 0.02308 E?= 0.000033
so = 3835482.233 s = 4154101.458 m = 318619.225
M = 318632.72 Ms = 30.82262319
q = -0.03188875 ro = 9235264.405 r = 8916631.685
Then Easting E = 15707.96 m (c.f. E = 15708.00 using full formulae)
Northing N = 623165.96 m (c.f. N = 623167.20 using full formulae)
Reverse calculation for the same easting and northing first gives
q' = -0.03188875
r? = 8916631.685
M?= 318632.72
Latitude = 0.654874806 rad = 37°31'17.625"N
Longitude = 0.595793792 rad = 34°08'11.291"E
http://www.opengis.net/def/method/EPSG/0/9817
Lambert Conic Near-Conformal
The Lambert Near-Conformal projection is derived from the Lambert Conformal Conic projection by truncating the series expansion of the projection formulae.
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.
To compute the Lambert Conic Near-Conformal the following formulae are used. First compute constants for the projection:
n = f / (2-f)
A = 1 / (6 rhoO nuO)
A? = a [ 1- n + 5 (n^2 - n^3 ) / 4 + 81 ( n^4 - n^5 ) / 64]*pi /180
B? = 3 a [ n - n^2 + 7 ( n^3 - n^4 ) / 8 + 55 n^5 / 64] / 2
C? = 15 a [ n^2 -n^3 + 3 ( n^4 - n^5 ) / 4 ] / 16
D? = 35 a [ n^3 - n^4 + 11 n^5 / 16 ] / 48
E? = 315 a [ n^4 - n^5 ] / 512
r0 = ko nu0 / tan(lat0)
s0 = A? latO - B? sin(2 latO) + C? sin(4 latO) - D? sin(6 latO) + E? sin(8 latO) where in the first term latO is in degrees, in the other terms latO is in radians.
Then for the computation of easting and northing from latitude and longitude:
s = A? lat - B? sin(2 lat) + C? sin(4 lat) - D? sin(6 lat) + E? sin(8 lat) where in the first term latO is in degrees, in the other terms latO is in radians.
M = s - sO
M = ko ( m + A m^3)
r = rO - M
theta = (lon - lonO) sin(latO)
and
E = FE + r sin(theta)
N = FN + M + r sin(theta) tan(theta/2)
The reverse formulas for latitude and longitude from Easting and Northing are:
theta' = arctan {(E ? FE) / [rO ? (N ? FN)]}
r' = +/- {(E ? FE)^2 + [rO ? (N ? FN)]}^2}^0.5, taking the sign of latO
M' = rO ? r'
If an exact solution is required, it is necessary to solve for m and lat using iteration of the two equations:
m'= m' ? [M' ? ko m' ? ko A (m')^3] / [? ko ? 3 ko A (m')^2]
using M' for m' in the first iteration. This will usually converge (to within 1mm) in a single iteration. Then
lat' = lat' +{m' + sO ? [A' lat' (180/pi) ? B' sin(2 lat') + C' sin(4 lat') ? D' sin(6lat') + E' sin(8 lat')]}/A' (pi/180)
first using lat' = latO + m'/A' (pi/180).
However the following non-iterative solution is accurate to better than 0.001" (3mm) within 5 degrees latitude of the projection origin and should suffice for most purposes:
m' = M' ? [M' ko M' ? ko A (M')^3] / [? ko ? 3 ko A (M')^2]
lat' = latO + m'/A' (pi/180)
s' = A ' lat' ? B' sin(2 lat') + C' sin(4 lat') ? D' sin(6 lat') + E' sin(8 lat')
where in the first term lat' is in degrees, in the other terms lat' is in radians.
Ds' = A'(180 / pi) ? 2B' cos(2 lat') + 4C' cos(4 lat') ? 6D' cos(6 lat') + 8E' cos(8 lat')
lat = lat' ? [(m' + sO ? s') / (?ds')] radians
Then after solution of lat using either method above
lon = lonO + theta' / sin(latO) where lonO and lon are in radians.
34.65
EPSG guidance note number 7.
1999-09-09
false
The latitude 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 latitude of the point which in the absence of application of false coordinates has grid coordinates of (0,0).
http://www.opengis.net/def/parameter/EPSG/0/8801
Latitude of natural origin
37.35
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
0.9996256
EPSG guidance note number 7.
1999-09-09
false
The factor by which the map grid is reduced or enlarged during the projection process, defined by its value at the natural origin.
http://www.opengis.net/def/parameter/EPSG/0/8805
Scale factor at natural origin
300000
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
300000
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
2004-01-06
true
false
http://www.opengis.net/def/crs/EPSG/0/4227
Deir ez Zor
Lebanon - onshore. Syrian Arab Republic - onshore.
35.04
42.38
32.31
37.3
OGP
2014-05-01
false
false
http://www.opengis.net/def/area/EPSG/0/1623
Asia - Middle East - Lebanon and Syria onshore
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
2008-06-24
false
http://www.opengis.net/def/datum/EPSG/0/6227
Deir ez Zor
Topographic mapping.
Fundamental point: Trig. 254 Deir. Latitude: 35°21'49.975"N, longitude: 40°05'46.770"E (of Greenwich).
Cartesian
OGP
2001-04-29
false
http://www.opengis.net/def/cs/EPSG/0/4499
Cartesian 2D CS. Axes: easting, northing (X,Y). Orientations: east, north. UoM: m.
Used in projected and engineering coordinate reference systems.
http://www.opengis.net/def/axis/EPSG/0/41
X
east
http://www.opengis.net/def/axis/EPSG/0/42
Y
north