Name: Maryland_Naval_Research_Lab_Radar_Areas

Display Field: area_name

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: <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>

Copyright Text: Naval Research Laboratory, 2021

Default Visibility: true

MaxRecordCount: 2000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 0

Max Scale: 0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:

XMin: -8584596.916874202
YMin: 4264114.962335797
XMax: -8088601.735985929
YMax: 5095018.561326557
Spatial Reference: 102100  (3857)

Drawing Info:

Renderer:
Simple Renderer:
Symbol:
Style: esriSFSSolid
Color: [252, 236, 179, 0]
Outline:
Style: esriSLSSolid
Color: [0, 112, 255, 255]
Width: 1
Label: N/A
Description: N/A
Transparency: 0
Labeling Info:

Advanced Query Capabilities:

Supports Statistics: true
Supports OrderBy: true
Supports Distinct: true
Supports Pagination: true
Supports TrueCurve: true
Supports Returning Query Extent: true
Supports Query With Distance: true
Supports Sql Expression: true
Supports Query With ResultType: false
Supports Returning Geometry Centroid: false

HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID )
• area_id ( type: esriFieldTypeString, alias: Area ID, length: 255 )
• area_name ( type: esriFieldTypeString, alias: Area Name, length: 255 )
• associated_sites ( type: esriFieldTypeString, alias: Installation, length: 255 )
• comp_concern ( type: esriFieldTypeString, alias: Compatibility Concern, length: 255 )
• area_desc ( type: esriFieldTypeString, alias: Area Description, length: 255 )
• Source ( type: esriFieldTypeString, alias: Source, length: 75 )
• Contact ( type: esriFieldTypeString, alias: Contact, length: 75 )
• Phone ( type: esriFieldTypeString, alias: Phone, length: 75 )
• Email ( type: esriFieldTypeString, alias: Email, length: 75 )
• Alt_Contact ( type: esriFieldTypeString, alias: Alt_Contact, length: 75 )
• Alt_Position ( type: esriFieldTypeString, alias: Alt_Position, length: 75 )
• Alt_Phone ( type: esriFieldTypeString, alias: Alt_Phone, length: 75 )
• Alt_Email ( type: esriFieldTypeString, alias: Alt_Email, length: 75 )
• Position ( type: esriFieldTypeString, alias: Position, length: 75 )
• Shape ( type: esriFieldTypeGeometry, alias: Shape )
• Shape.STArea() ( type: esriFieldTypeDouble, alias: Shape.STArea() )
• Shape.STLength() ( type: esriFieldTypeDouble, alias: Shape.STLength() )

Supported Operations:   Query   Generate Renderer   Return Updates

  Iteminfo   Thumbnail   Metadata