A zero-baseline test of 4 GNSS receivers (Precis-BX305 incl.) was conducted by Daniel Tampubolon from Institute Teknologi Bandung in Indonesia. He used zero-baseline test in order to obtain noise of receiver by single-differencing the raw. Then he found out the characteristic of noise for each receiver by analyzing its spectrum.

Test/Experiment Setup: He connected 4 GNSS receivers, including two Precis-BX305 boards (indicating as TerA & TerB in all charts) to one antenna with a one-to-four RF splitter. Then he formed four double different zero baselines between every two receivers and analyzed the quality of the double different observations. Part of the results shown in following figure and details could be found in PDF file, click here.

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