- (). : ECD1S (Electronic Chart Display and Information System); ECS (Electronic Chart System).
ECD1S - - (), , . ECD1S V/20 (SOLAS-74). , , , , , , , , . ECD1S. , ECD1S.
, ECD1S . , ECD1S .
ECD1S, : - (IMO -International Maritime Organization), - ( - International Hydrographic Organization), - . (IEC - International Electrotechnical Comission).
ECS - , ECD1S, ECS
ECD1S .
ECDIS , , . .
ECDIS . , ECDIS , , . ECDIS , , . ECDIS , , , , .
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, ECDIS. ECDIS , ; ;
, ; ; ; , .., , , . . ECDIS :
- , , , , , , , , - , ;
ECDIS , , , ECDIS ;
, ECDIS.
1. .
- (electronic chart -) - .
1.1. .
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, , (). , .
. , . , . , , () .
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. - (chart digitizer).
.
(Rastr electronic navigational chart - RNC) (). . . . . . 90- .
(Vector electronic navigational chart -VENC) , , , . , . () , ; .
, . , , : , , , .. , , .
. , , : , , . : , .
- , . , , . , . : ( ); ; , ; , , , , ; ;
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, . GPS , , . WGS84 . . .
. , . . , , () . (RNC) , , (ARCS -Admiralty Raster Chart Strvice), (NOAA - National Oceanic and Atmospheric Administration).
, , ecdis- ecs-. Ecdis- - , , , . ECDIS. Ecdis- Electronic navigational charts - ENC. ecdis- :
;
;
;
;
, .
Ecs- : , , , .
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. , . , , . :
(World) - 1:2500001 ;
(General) - 1:300001 - 1:2500000;
(Coastal) - 1:80001 - 1:300000;
(Approach)- 1:40001 - 1:80000;
(Harbour)-1:10001-1:40000;
(Plan) -1:10000 . , :
- 1:1000000 - 1:5000000;
- 1:100000 - 1:500000;
- 1:25000 - 1:50000;
- 1:25000 .
. . , , . .
(System electronic navigational chart - SENC) - , . , . , . SENC .
.
(, ) ( ). , . , . .
( ) , , , -. - , , , .
, -, . , , .
, . . "Bissau Base North West and Pillar".
. : 1942 (Pulkovo 1942), 1950 (ED50), 1936 . . . 1983 , (NAD83-- New North American Datum of 1983). , , .
- . WGS72, WGS84 390 (SGS90 - Soviet Geocentric Coordinate System 1990).
, . , , . , , Decca, Hifix . . .
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1930 . 1930 1950 . , , . I960 . (Word Geodetic System of 1960 - WGS60). 1966, 1972, 1984 . WGS84, . NAD83. b - WGS84 :
=6378137.00 ; =6356752.31 .
WGS84 GPS. WGS84 . 390.
, , . , , 2. 3 , .
, , , . . . . WGS84 390 15 , WGS84 WGS72 - 17 . WGS84 , , 1862 , 2-5 . , , - . WGS84 , , 7 .
. , , , . . 1982 ., WGS. "Satellite-Derived Positions" . , .
, GPS, WGS84, , . , - WGS84. WGS84: "Adjustments to WGS cannot be determined for this chart" "The diiferences between satellite-derived positions and positions on this chart cannot be determined", - "Differences may be significant to navigation".
. , , . . , , , , , , , .