文件中的符号说明如下表
DDR 头标区
019003LE1 0900319 ! 5504
DDR 目次区
0000001630000000010004400163FRID0011400207FOID0007400321ATTF0006000395NATF0006900450FFPC0008900524
FFPT0008300613FSPC0008900696FSPT0009100785VRID0008300876ATTV0005900959VRPC0007001018VRPT000770108
8SGCC0005901165SG2D0004601224SG3D0005101270ARCC0007801321AR2D0006001399EL2D0007401459CT2D0004801
533∇
DDR 字段区
0000;&Δ0001FRIDFRIDFOIDFRIDATTFFRIDNATFFRIDFFPCFRIDFFPTFRIDFSPCFRIDFSPT0001VRIDVRIDATTVVRIDVRPCV
RIDVRPTVRIDSGCCVRIDSG2DVRIDSG3DVRIDARCCARCCAR2DARCCEL2DARCCCT2D∇
DDR 字段区
0100;& ISO 8211 Record IdentifierΔΔ (I(5))∇1600;& Feature record identifier fieldΔRCNM!RCID!PRIM!GRUP!OBJL!
RVER!RUINΔ(A(2),I(10),A(1),I(3),I(5),I(3),A(1))∇
1600;& Feature object identifier fieldΔAGEN!FIDN!FIDSΔ(A(2),I(10)
,I(5))∇
2600;&-A Feature record attribute fieldΔ*ATTL!ATVLΔ(I(5),A)∇
2600;&%/AFeature record national attribute fieldΔ*ATTL!ATVLΔ(I(5),A)∇
1600;& Feature record to feature object pointer control fieldΔFFUI!FFIX!NFPTΔ(A(1),2I)∇
2000;& Feature record to feature object pointer fieldΔ*LNAM!RIND!COMTΔ(A(17),2A)∇
1600;& Feature•record•to•spatial•record•pointer•control•fieldΔFSUI!FSIX!NSPTΔ(A(1),2I)∇
2000;& Feature record to spatial record pointer fieldΔ*NAME!ORNT!USAG!MASKΔ(A(12),3A(1))∇
1600;& Vector record identifier fieldΔRCNM!RCID!RVER!RUINΔ(A(2),I(10),I(3),A(1))∇
2600;& Vector record attribute fieldΔ*ATTL!ATVLΔ(I(5),A)∇
1600;& Vector record pointer control fieldΔVPUI!VPIX!NVPTΔ(A(1),2I)∇
2000;& Vector record pointer fieldΔ*NAME!ORNT!USAG!TOPI!MASKΔ(A(12),4A(1))∇
1600;& Coordinate control fieldΔCCUI!CCIX!CCNCΔ(A(1),2I)∇
2200;& 2-D Coordinate fieldΔ*YCOO!XCOOΔ(2R)∇
2200;& 3-D Coordinate fieldΔ*YCOO!XCOO!VE3DΔ(3R)∇
1600;& Arc/Curve definition fieldΔATYP!SURF!ORDR!RESO!FPMFΔ(2A(1),I(1),R,I)∇
2600;& Arc coordinate fieldΔSTPT!CTPT!ENPT*YCOO!XCOOΔ(2R)∇
2600;& Ellipse coordinate fieldΔSTPT!CTPT!ENPT!CDPM!CDPR*YCOO!XCOOΔ(2R)∇
2600;& Curve coordinate fieldΔ*YCOO! XCOOΔ (2R)∇
DR 1 头标区(地理特征记录)
00245 D 00109 5504
DR 1 目次区
00010000600000FRID0002600006FOID0001800032ATTF0004100050NATF0002900091FSPT0001600120∇
DR 1 字段区
00001∇
FE0000000001P00200018001I∇
DDR 头标区
019003LE1 0900319 ! 5504
DDR 目次区
0000001630000000010004400163FRID0011400207FOID0007400321ATTF0006000395NATF0006900450FFPC0008900524
FFPT0008300613FSPC0008900696FSPT0009100785VRID0008300876ATTV0005900959VRPC0007001018VRPT000770108
8SGCC0005901165SG2D0004601224SG3D0005101270ARCC0007801321AR2D0006001399EL2D0007401459NL000000000
100001∇000044_000753,1_000763_00116North sea 1Δ∇00301•N•o•o•r•d•z•e•e• •1•Δ•∇VI0000000001NNN∇
DR 2 头标区(空间记录)
00110 D 00067 5504
DR 2 directory
00010000600000VRID0001700006SG2D0002000023∇
DR 2 field area
00002∇
VI0000000001001I∇
52.10475Δ4.3004833Δ∇
参考文章：电子海图