Entry: POSEIDON-3
URI: https://terra-vocabulary.org/ncl/FAIR-Incubator/earthsciencesensors/c_8b330764
The Poseidon-3 radar altimeter is the main instrument on the Jason-2 mission. Derived from the Poseidon-1 altimeter on Topex/Poseidon and the Poseidon-2 on Jason-1, it measures sea level, wave heights and wind speed. The Poseidon-3 altimeter emits pulses at two frequencies 13.6 and 5.3 GHz to measure the distance from the satellite to the surface (range). Free electrons in the atmosphere can delay the signal's return, affecting the measurement accuracy. The delay is directly related to the radar frequency, so the difference between the two measurements can be used to determine atmospheric electron content. Poseidon-3 is coupled with Doris/Diode, to improve measurements over coastal areas, inland waters and ice.
Core metadata
| is a | Concept | Sensor |
| changed on | 1 Dec 2023 10:43:54.329 |
| submitted by | Viqui Agazzi |
| accepted on | 29 Sep 2022 09:14:26.525 |
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All metadata properties
| date accepted |
29 Sep 2022 09:14:26.525
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| date submitted |
29 Sep 2022 09:11:14.836
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| definition |
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| item class |
Sensor
| Concept
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| label |
POSEIDON-3
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| modified |
1 Dec 2023 10:43:54.329
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| notation |
c_8b330764
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| register |
earthsciencesensors
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| status |
status experimental
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| type |
register item
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| version info |
3
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Definition
| broader |
Radar Altimeters
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| definition |
The Poseidon-3 radar altimeter is the main instrument on the Jason-2 mission. Derived from the Poseidon-1 altimeter on Topex/Poseidon and the Poseidon-2 on Jason-1, it measures sea level, wave heights and wind speed. The Poseidon-3 altimeter emits pulses at two frequencies 13.6 and 5.3 GHz to measure the distance from the satellite to the surface (range). Free electrons in the atmosphere can delay the signal's return, affecting the measurement accuracy. The delay is directly related to the radar frequency, so the difference between the two measurements can be used to determine atmospheric electron content. Poseidon-3 is coupled with Doris/Diode, to improve measurements over coastal areas, inland waters and ice.
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| exact match |
842c4fea afe2 4ed1 aade ccce65cfb121
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| label |
POSEIDON-3
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| pref label |
POSEIDON-3
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| type |
Concept
| Sensor
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