Radar water level meter solar power generation

Can a do-it-yourself sensor be used to measure water level?

Open-source do-it-yourself sensors can vastly reduce acquisition costs—which is a major barrier for collecting in situ water level data. In recent years, the use of inexpensive sensors has gained popularity in surface water monitoring and has shown great promise (e.g., Knight et al., 2020; Mao et al., 2020 ).

How accurate is a water level sensor?

We have developed a cost-effective water level sensor called RPR, using Global Navigation Satellite System interferometric reflectometry (GNSS-IR). It has been demonstrated to be capable of measuring river level with nearly centimeter level accuracy.

Can RPR data be transmitted only to a water level sensor?

Third, the potential to process the SNR data in the RPi and transmit only resulting water level from the on-site RPR sensor to the data server is practical when and where available telemetry bandwidth is limited. The file size of an uncompressed daily GPS data is ∼38 MB and about 1.1 GB per month.

Is there a correlation between water level uncertainty and wind speed?

There is not a one-to-one correspondence between the RPR's water level uncertainty and the wind speed. For differences greater than 15 cm and wind speeds larger than 6 m/s, we found a moderate correlation ( ρ = 0.45) (Figure 8c ).