What is the GPS/GNSS SkyView Antenna Installation Verification Tool?

VeEX's SkyView™ test tool creates GNSS satellites' reception signal quality (coverage) maps for the antenna under test, based on carrier-to-noise density (C/No) measurements from the different supported constellations and frequency bands.

Original SkyView 2017 Version (Single band, Dual constellation) 

Original SkyView user interface (2017)

SkyView 2024 Version (Dual band, Quad constellation)

ConstellationGPS.gif file from Wikipedia, attributed to user Shushruth. - A simulation of the original design of the GPS space segment, with 24 GPS satellites (4 satellites in each of 6 orbits), showing the evolution of the number of visible satellites from a fixed point (45ºN) on earth

The MTTplus' SkyView™ test application uses its GNSS receiver to create detailed satellites' reception signal quality (coverage) maps for the antenna under test, based on the carrier-to-noise density (C/No) measurements from all satellites in view. The C/No is constantly recorded for each of the satellites in view, as they pass by, which over time creates a color-coded trail. Long term, those trails create a "heat" map representing the 360º by 180º degrees field of view (reception pattern) of the antenna under test.

Carrier-to-noise density, in dB-Hz, is plotted from red (bad RF signal reception) to green (good signal quality), to allow the detection of obstructions and blind spots.

The SkyView test application supports GPS, GLONASS, Galileo, and BeiDou satellite constellations simultaneously. The constellations and bands to be used for the test depend on the GNSS receiver installed on the test set and the capabilities of the antenna under test. With the latest multiband GNSS receiver, up to two frequency bands for each of the four major satellite systems, allowing it to paint coverage maps quicker and more accurately.

To launch the SkyView test application, tap on the image-png-Oct-06-2022-05-11-08-52-PM System Utilities button (on the top-left corner of the screen), if required, and use the menu on the left to go to >Tools >Advanced >More >GNSS Sky View & Antenna Verification. Connect the antenna cable to the GNSS receiver's SMA connector, using a short flexible adapter cable.

  • It is recommended to release any other test applications, before starting the SkyView test application.
  • A paid license (software option) is required for this feature to become available.
  • The GNSS receiver option (hardware) is required to run Sky View tests.

The test set stores the coverage image in polar form and the C/No data log. Once the test is stopped, they can be saved to a FAT32 USB memory stick for further analysis and reporting. An Excel template is available for simple report customization. Optionally, users can select to record the satellites' data to replay it back on the test set (This requires large amounts of storage memory).

Please refer to the following SkyView Quick Guide link to download a PDF with further information.

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