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First waveforms over river from the nadir altimeter on SWOT
After a successful launch on Dec. 16, 2022, the Poseidon-3C nadir altimeter onboard the Swot satellite has started delivering its first measurements, on rivers & lakes too.
![Zoom on the figure below over the Litani river & a single waveform extracted from it, typical of what can be acquired on such rivers (Credit Cnes (Sophie Le Gac & Alexandre Guérin)) Zoom on the figure below over the Litani river & a single waveform extracted from it, typical of what can be acquired on such rivers (Credit Cnes (Sophie Le Gac & Alexandre Guérin))](/fileadmin/_processed_/3/c/csm_Comm_POS-3C_First_Meas_over_Hydrology_EchoLitani_commented-v2_066c8d3e50.png)
Zoom on the figure below over the Litani river & a single waveform extracted from it, typical of what can be acquired on such rivers (Credit Cnes (Sophie Le Gac & Alexandre Guérin))
![Série de formes d'ondes (zones colorées) acquises par l'altimètre nadir de Swot, Poséidon-3C, au-dessus de plusieurs fleuves du bassin du Maroni en Guyane française, Amérique du Sud, le 20 janvier 2023. Série de formes d'ondes (zones colorées) acquises par l'altimètre nadir de Swot, Poséidon-3C, au-dessus de plusieurs fleuves du bassin du Maroni en Guyane française, Amérique du Sud, le 20 janvier 2023. (Crédit Cnes (Sophie Le Gac & Alexandre Guérin))](/fileadmin/_processed_/4/5/csm_Comm_POS-3C_First_Meas_over_Hydrology__f16a670e2a.png)
Série de formes d'ondes (zones colorées) acquises par l'altimètre nadir de Swot, Poséidon-3C, au-dessus de plusieurs fleuves du bassin du Maroni en Guyane française, Amérique du Sud, le 20 janvier 2023. (Crédit Cnes (Sophie Le Gac & Alexandre Guérin))
After a successful launch on Dec. 16, 2022, the Poseidon-3C nadir altimeter onboard the Swot satellite has started delivering its first measurements.
The colored images on this map show the waveforms sucessfully acquired by Poseidon-3C over several rivers in the Maroni basin in French Guiana, on January 20, 2023.
These waveforms show the already excellent tracking performances of Poseidon-3C in orbit.
This first result is very promising for the upcoming commisionning phase of this new nadir altimeter!
I-GDR data have been processed through the Cnes Swot Expertise Center.