NGA DMA TECHNICAL MANUAL 8358_1

NGA DMA TECHNICAL MANUAL 8358_1 - NGA > Products and...

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NGA > Products and Services > Office of GEOINT Sciences > Publications > DMA TECHNICAL MANUAL 8358.1 : Table of Contents DMA TECHNICAL MANUAL 8358.1 Datums, Ellipsoids, Grids, and Grid Reference Systems TM 8358.1 APPENDIXES A-D APPENDIX A TABLE OF MIL EQUIVALENTS APPENDIX A TABLE OF MIL EQUIVALENTS APPENDIX B 100,000-METER SQUARE IDENTIFICATIONS OF MILITARY GRID REFERENCE SYSTEM TO DETERMINE THE UTM OR UPS 100,000-METER SQUARE MGRS IDENTIFICATION B-1. These instructions provide a method for determining the correct UTM or UPS 100,000- meter square identification for any point in the world. See Chapter 3 for a full explanation of the 100,000-meter square identification. If geographic coordinates are the only coordinates given, they must he transformed to UTM or UPS grid coordinates. The following data are necessary to determine the correct 100,000-meter square letters:
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B-1.1 For the UPS grid: B-1.1.1 UPS grid coordinates (easting and northing). B-1.1.2 The polar zone in which the coordinates are located. B-1.2 For the UTM grid: B-1.2.1 UTM grid coordinates (easting and northing). B-1.2.2 UTM grid zone B-1.2.3 Geographic coordinates or the 8° latitude bond letter which is the Grid Zone Designation letter. B-1.2.4 Ellipsoid and/or datum. B-2 Determine by area, datum, and/or ellipsoid which of the following figures is appropriate: Figure B-1: North of 84°N. Figure B-2: South of 80°S. Figure B-3: Geodetic Reference System (GRS 1980) International World Geodetic System 1984 Figure B-4: Bessel 1841 B-3 Method of use with the UPS grid: B-3.1 If the coordinates fall in the north Polar region, use figure B-1 to determine the correct square identification letters. If the coordinates fall in the south Polar region, use figure B-2. B-3.2 In figures B-1 and B-2, the easting lines are labeled every 500,000 meters from left to right with the 2,000,000 meter line being coincident with the O° and 180° line. If the easting is less than 2,000,000 meters the Grid Zone Designation will be Y or A depending on whether the point is in the North or South Polar region. If the easting is greater than 2,000,000 meters the Grid Zone Designation will be Z or B. The northing lines are labeled every 500,000 meters from bottom to top with the 2,000,000 meter line coincident with the 90°W and 90°E line. B-3.3 Reduce both easting and northing to the nearest 100,000 meters. B-3.4 Find these grid lines on the figure. B-3.5 The 100,000-meter square will be to the right and above these lines. B-3.6 The procedure is the some for the north Polar region or the south Polar region. Example:
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NGA DMA TECHNICAL MANUAL 8358_1 - NGA > Products and...

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