Sample ADRG >>Click to enlarge.

Free ADRG Viewer

The following military map formats are supported by Fugawi Global Navigator Military Version.

• ADRG - ARC Digital Raster Graphics
• CADRG - Compressed ARC Digital Raster Graphics
• CIB - Controlled Image Base

ARC (equal Arc second Raster Chart) Digitized Raster Graphics (ADRG) are digital raster representations of paper graphic products. Maps/charts are converted into digital data by raster scanning and transforming the map image into the ARC System frame of reference. Data collected from a single chart/map series and scale will be maintained as a worldwide seamless data base of raster graphic data with each pixel having a distinct geographic location.

DOD Mil-Spec No.
MIL-A-89007

Data Density
The information content is the same as that of the hardcopy map. Scanning resolution nominal 100 microns pixel size
(254 pixels/inch), 24 bits per Red/Green/Blue (RGB) pixel.

Coordinate Reference System
ARC System (Rectangular Projection). In the ARC system the world is divided into 18 latitude zones to obtain equal spacing with minimum distortion.

Horizontal Datum
World Geodetic System 1984 (WGS 84)

Vertical Datum
Same as source graphic

Content
Data files containing scanned image data. Header records for source definition as well as a reduced-resolution image overview file for the entire CD-ROM.

Structure
RGB Raster

Format
Data: ISO 8211, ASCII data description followed by binary image data.
Media: ISO 9660 CD-ROM

Accuracy
For medium and small scale graphics, horizontal accuracy is the same as the base graphic. For large scale graphics, horizontal accuracy is the root sums square of the source graphic accuracy plus 2 pixels at scale. Vertical accuracy is the same as that of the source graphic. See product specification for details. Visually, the image will appear slightly distorted near the zone boundaries when compared to the base graphic.

Area Coverage
ADRG has been produced from paper maps in the following scales: 1:5,000,000 General Navigation Chart (GNC), 1:2,000,000 Jet Navigation Charts (JNC), 1:1,000,000 Operational Navigation Charts (ONC), 1:500,000 Tactical Pilotage Charts (TPC), 1:250,000 Joint Operations Graphics (JOG), 1:100,000 and 1:50,000 Topographic Line Maps (TLM), City Graphics, Combat charts, and Nautical Charts.

As of this writing, 4000 ADRG CD ROM titles representing over 14,000 scanned paper maps have been produced.

Currently, stock numbers for existing ADRG are listed in the Aerospace Products Semiannual Bulletin Digest (stock number CATP1UBD) and Topographic Products Semiannual Bulletin Digest (stock number CATP3V01UBD). In most cases, the ADRG stock numbers directly correspond to the sheet number of the paper map stored as ADRG on the CD-ROM. In the case of JOGs (normally four are scanned onto one CD-ROM) and TLMs (normally six are scanned onto one CD-ROM), paper map stock numbers can be cross referenced to ADRG stock numbers using listings in the Aeronautical Products Semiannual Bulletin Digest for JOGs and in the Topographic Products Semiannual Bulletin Digest for TLMs.

The cataloging system described above is being replaced with a dedicated ADRG catalog.

Questions should be directed to Headquarters Defense Mapping Agency, Plans and Requirements Directorate, Aerospace Warfare Division (PRA).

Applications
Map displays on command and control systems, mission planning systems, and aircraft cockpits.

Releasability
Releasable to DoD, its contractors and other Executive Agencies supporting DoD activities. Some small scale ADRG may be released to the public.

Summary
CADRG is to be a jointly-coordinated common compression of ARC Digitized Raster Graphics (ADRG) for use in any application requiring rapid display of a map image or manipulation of the image of a map in raster form. Compressed ADRG (CADRG), achieves a nominal compression of 55:1 over ADRG.

Product Specifications
DOD Mil-Spec No.
MIL-C-89038

Data Density
CADRG has a data density of 169 pixels/inch at 1:1 display scale; it can be decompressed for 8-bit (216 colors) or 4-bit (16 colors) displays.

Coordinate Reference System
ARC (equal Arc second Raster Chart/map) System (Rectangular Projection). In the ARC system the world is divided into 18 latitude zones to obtain equal spacing with minimum distortion.

Horizontal Datum
World Geodetic System 1984 (WGS 84)

Vertical Datum
Same as the vertical datum of the source graphic.

Content
Each data frame file contains digital information with common header records. A frame file contains all of the information for a defined geographic area. The information content of CADRG is the same as that of the base map. CADRG includes Global Navigation Charts (GNC, 1:5M), Jet Navigation Charts, (JNC, 1:2M), Operational Navigation Charts (ONC, 1:1M), Tactical Pilotage Charts, (TPC, 1:500k), Joint Operations Graphics-Air (JOG-A, 1:250k), Topographic Line Maps (TLM, 1:50k), and from City Graphics (variable scales from 1:5k to 1:15k).

Structure
RGB Raster

Format
Data: Raster Product Format (RPF)
Media: ISO 9660 CR-ROM

File Size
Frame file typical size 288,978 bytes. Actual sizes are variable.

Accuracy
Vertical accuracy for CADRG is the same as for the source graphic. Horizontal accuracy for medium and small scale is the same as for the source graphic. Horizontal accuracy for large scale is the root sums square of the source graphic accuracy plus 2 pixels at scale.

Area Coverage
Coverage for CADRG will match that of the ADRG source products.

Applications
CADRG is intended for use in a variety of systems requiring map backgrounds, coordinate selection, and perspective view generation. This includes, but is not limited to, mission planning systems, theater battle management systems, and intelligence systems. CADRG is intended to replace Compressed Aeronautical Chart (CAC), Compressed Raster Graphics (CRG) and Air Force's Common Mapping Standard (CMS), providing a common raster map set for DoD displays.

Releasability
Intent is for the final product to be releasable to DoD, its contractors, and other Executive Agencies supporting DoD activities.

Summary
CIB is unclassified panchromatic (black and white) digital imagery produced to support a variety of mission planning and command, control, communications, and intelligence systems. CIB is a compressed and National Imagery Transmission Format Standard (NITFS)-compliant outgrowth of ARC Digital Raster Imagery (ADRI). CIB will initially be produced from SPOT commercial imagery that has been orthonormalized using DMA Digital Terrain Elevation Data Level 1 (DTED1); it will eventually be produced from stereo imagery that has been orthorectified to remove relief displacements and other sources of positional error. DMA anticipates prototyping of CIB in early CY 94 and beginning production later in the year.

Product Specifications
Under development in conjunction with the first prototype. CIB will be compliant with Raster Product Format (RPF) and National Imagery Transmission Format Standard (NITFS).

Data Density
The SPOT panchromatic imagery that must be used initially has a 10 meter ground sample distance, which corresponds to a nominal pixel spacing in initial CIB of 10 meters. As unclassified imaging systems attain higher resolution, CIB will migrate toward a target ground sample distance of 5 meters.

Coordinate Reference System
To be determined.

Horizontal Datum
World Geodetic System 1984 (WGS 84)

Content
To be determined.

Structure
Raster grey-scale

Format
Data: Raster Product Format (RPF)
Media: ISO 9660 CR-ROM

File Size
To be determined.

Accuracy
To be determined.

Area Coverage
A global requirement for landmass and littoral zones is assumed.

Applications
Rapid overview of areas of operations, map substitute for emergencies and crises, metric foundation for anchoring other data in C4I systems or image exploitation, positionally-correct images for draping in terrain visualization, and image backgrounds for mission planning and rehearsal.

Releasability
Release is determined on a case-by-case basis. Intent is for the final product to be released to DoD, its contractors, and other Executive Agencies supporting DoD activities.