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Path Profile Analysis

The Path Profile Analysis (PPA) feature allows a point to point (P2P) study which generates a 2D profile graph and text report highlighting obstructions.
To use the PPA feature click the link icon in the bottom menu. Two flag markers will appear on the map next to each other. Drag and drop them into position to draw a profile. If you want it reversed, swap round the markers. The values for frequency, heigh, power will be taken from the left hand input form whenever you re-locate the markers.
When you have a graph, you can click the information icon above the top left corner to view a text report for the link.

		--==[ Path Profile Analysis ]==--

Transmitter site: Tx
Site location: 50.3314 North / 4.0591 West
Ground elevation: 105.00 meters AMSL
Antenna height: 2.00 meters AGL / 107.00 meters AMSL
Distance to Rx: 11.64 kilometers
Azimuth to Rx: 273.18 degrees
Elevation angle to Rx: +0.0854 degrees
Elevation
Receiver site: Rx
Site location: 50.3371 North / 4.2229 West
Ground elevation: 123.00 meters AMSL
Antenna height: 12.00 meters AGL / 135.00 meters AMSL
Distance to Tx: 11.64 kilometers
Azimuth to Tx: 93.06 degrees
Depression angle to Tx: -0.1901 degrees
DepressionLongley-Rice path calculation parameters used in this analysis:

Earth's Dielectric Constant: 15.000
Earth's Conductivity: 0.005 Siemens/meter
Atmospheric Bending Constant (N-units): 301.000 ppm
Frequency: 446.000 MHz
Radio Climate: 6 (Martitime Temperate, Over Land)
Polarisation: 1 (Vertical)
Fraction of Situations: 50.0%
Fraction of Time: 50.0%
Transmitter ERP: 1.0 Watts (+30.00 dBm)
Transmitter EIRP: 1.6 Watts (+32.14 dBm)

Summary for the link between Tx and Rx:

Free space path loss: 106.78 dB
Longley-Rice path loss: 134.04 dB
Attenuation due to terrain shielding: 27.27 dB
Field strength at Rx: 28.34 dBuV/meter
Signal power level at Rx: -101.90 dBm
Signal power density at Rx: -117.44 dBW per square meter
Voltage across 50 ohm dipole at Rx: 2.30 uV (7.23 dBuV)
Voltage across 75 ohm dipole at Rx: 2.81 uV (8.99 dBuV)
Mode of propagation: Double Horizon, Diffraction Dominant
...

ARCHIVE

The archive button will open a popup table of your most recent adhoc calculations and fixed sites. From here you can choose to add them to the map by clicking the file name or download them as either KMZ,TIFF or SHP files or share them as either a URL or HTML embed code. To delete sites, select the left most checkbox then click the trash can icon.

Click the layer name to add it to the map

Download formats:

KMZ

Open GIS overlay standard comprising an XML file and PNG image overlay. WGS84 projection.

SHP

Widely supported vector format used by Mapinfo, ArcMap. WGS84 projection.

TIFF

Widely supported raster format used by Mapinfo, ArcMap. Large file size. WGS84 projection.

Public link

Get a unique URL you can share your work with.

Embed code

Get some example HTML code to embed the calculation on your website. Choose to leave the layer on CloudRF or host it yourself for extra control.

Enter a frequency in the 'Search' field to filter for layers by frequency

MESH

The mesh feature will merge individual calculations into a consolidated network when clicked. The maximum number of sites you may mesh is determined by your plan. To use it, either generate the sites one by one then click the mesh button or open your archive and click the top left check box to load all layers to the map then click the mesh button. Be aware that you cannot mesh across continents. The maximum height and width of a mesh is 5 degrees latitude/longitude. Meshing assumes you have used the same colour schema across your sites. For best results use the traffic light colour schema.

Mesh generation can take up to 2 minutes depending on how many sites you have. Once complete all the child layers will be removed from the map and replaced with a single super layer. This super layer will also exist in your archive so you can reload it, download it, embed it on your company's website etc.

For best results use the traffic light colour schema

CLEAR

To clear the map and layers control of all overlays click the rubbish bin. Note that this will not remove them from your archive so you can recover them later.

Cleared layers can be recovered by opening your archive

functions.txt · Last modified: 2017/05/06 20:38 by alex