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1.0
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NRL_Radar_Areas
002
1280347.744111
2501993.622664
-677965.363301
1417832.115371
1
Projected
GCS_NAD_1983_2011
Linear Unit: Foot_US (0.304801)
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NAD_1983_2011_StatePlane_Maryland_FIPS_1900_Ft_US
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ItemDescription
Version 6.2 (Build 9200) ; Esri ArcGIS 10.8.1.14362
Maryland NRL_Radar_Areas
1
-77.116744
-72.661145
41.558128
35.734236
This layer is to be used in the military & compatibility portion of the Maryland SmartDG tool.
Naval Research Laboratory, 2021
SmartDG
Marlyand Energy
MD iMap
Maryland
Vector
Cached
WMS
WFS
KML
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The Naval Research Laboratory areas of radar concerns.</SPAN></P><P><SPAN>Radars locate an object’s position by emitting electromagnetic waves that reflect off objects, such as planes, birds, and mountains, and are returned to the radar. The electromagnetic waves that are returned to the radar provide the information needed to calculate an estimated size, location, speed, and direction of an object.</SPAN></P><P><SPAN>The radar viewshed, or field of view, is the area that is within range of a radar’s electromagnetic waves. The range of the viewshed is influenced by multiple factors, including the radar’s look angle, terrain, weather, as well as natural and manmade objects. Natural and man-made structures within a radar’s field of view can limit the range of the viewshed by blocking electromagnetic waves, which impacts the integrity and usefulness of a radar in identifying and locating aircraft, watercraft, weather, or other objects such as missiles. Additionally, other electromagnetic activity, such as radio waves or microwaves, in the vicinity of a radar transmitter and/or receiver (typically within 8 to 10 miles) can interfere with the electromagnetic waves emitted by the radar. One of the most crucial components within the radar viewshed is the line-of-sight, which is the linear path between the transmitter and receiver (when not the same antenna). An obstruction to this linear path can result in loss communication signals between the transmitter and receiver rendering the radar ineffective. </SPAN></P><P><SPAN /></P><P><SPAN /></P><P><SPAN /></P></DIV></DIV></DIV>
File Geodatabase Feature Class
dataset
EPSG
8.2.10(10.3.1)
13
Simple
FALSE
13
TRUE
FALSE
NRL_Radar_Areas
Feature Class
13
OBJECTID
OBJECTID
OID
4
0
0
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
Shape
Shape
Geometry
0
0
0
Feature geometry.
Esri
Coordinates defining the features.
Shape_Length
Shape_Length
Double
8
0
0
Length of feature in internal units.
Esri
Positive real numbers that are automatically generated.
Shape_Area
Shape_Area
Double
8
0
0
Area of feature in internal units squared.
Esri
Positive real numbers that are automatically generated.
area_id
Area ID
String
255
0
0
area_name
Area Name
String
255
0
0
associated_sites
Installation
String
255
0
0
Source
Source
String
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0
0
Contact
Contact
String
75
0
0
Phone
Phone
String
75
0
0
Email
Email
String
75
0
0
Alt_Contact
Alt_Contact
String
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0
0
Alt_Position
Alt_Position
String
75
0
0
Alt_Phone
Alt_Phone
String
75
0
0
Alt_Email
Alt_Email
String
75
0
0
comp_concern
Compatibility Concern
String
255
0
0
area_desc
Area Description
String
255
0
0
20241029