&lt;sup&gt;3&lt;/sup&gt;Cat-2: A P(Y) and C/A GNSS-R experimental nano-satellite mission

Carreño-Luengo, Hugo; Camps, Adriano; Perez-Ramos, I.; Forte, Giuseppe; Onrubia, R.; Diez, Rodrigo

doi:10.1109/igarss.2013.6721290

Cited by 16 publications

(12 citation statements)

References 1 publication

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“…Two other spaceborne GNSS‐R experiments are being prepared: the 3Cat‐2 [ Carreño‐Luengo et al ., ] and GEROS‐ISS. The 3Cat‐2 is a six‐unit cubesat developed by the Universitat Politécnica de Catalunya (UPC) and partially funded by the European grant FP7 E‐GEM.…”

Section: Future Gnss‐r Satellite Capabilitiesmentioning

confidence: 99%

Wetland monitoring with Global Navigation Satellite System reflectometry

Nghiem

Zuffada

Shah

et al. 2017

Earth and Space Science

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Information about wetland dynamics remains a major missing gap in characterizing, understanding, and projecting changes in atmospheric methane and terrestrial water storage. A review of current satellite methods to delineate and monitor wetland change shows some recent advances, but much improved sensing technologies are still needed for wetland mapping, not only to provide more accurate global inventories but also to examine changes spanning multiple decades. Global Navigation Satellite Systems Reflectometry (GNSS‐R) signatures from aircraft over the Ebro River Delta in Spain and satellite measurements over the Mississippi River and adjacent watersheds demonstrate that inundated wetlands can be identified under different vegetation conditions including a dense rice canopy and a thick forest with tall trees, where optical sensors and monostatic radars provide limited capabilities. Advantages as well as constraints of GNSS‐R are presented, and the synergy with various satellite observations are considered to achieve a breakthrough capability for multidecadal wetland dynamics monitoring with frequent global coverage at multiple spatial and temporal scales.

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Section: Future Gnss‐r Satellite Capabilitiesmentioning

confidence: 99%

Wetland monitoring with Global Navigation Satellite System reflectometry

Nghiem

Zuffada

Shah

et al. 2017

Earth and Space Science

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“…The utmost sensors used for oceanography (SARs and radar altimeters) have features that make them difficult to board on nano-satellites, most notably the power requirements, and the antenna size. An attractive option to explore the sea surface topography is the use of reflected Global Navigation Satellite Systems (GNSS) signals [34,35]. GNSS reflectometry is a favourable technique to perform some ocean measurements with small satellites [36].…”

Section: Signals Of Opportunity (Soop): Gnss-r and Receiver Of Soopmentioning

confidence: 99%

Selection of the Key Earth Observation Sensors and Platforms Focusing on Applications for Polar Regions in the Scope of Copernicus System 2020–2030

et al. 2019

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An optimal payload selection conducted in the frame of the H2020 ONION project (id 687490) is presented based on the ability to cover the observation needs of the Copernicus system in the time period 2020–2030. Payload selection is constrained by the variables that can be measured, the power consumption, and weight of the instrument, and the required accuracy and spatial resolution (horizontal or vertical). It involved 20 measurements with observation gaps according to the user requirements that were detected in the top 10 use cases in the scope of Copernicus space infrastructure, 9 potential applied technologies, and 39 available commercial platforms. Additional Earth Observation (EO) infrastructures are proposed to reduce measurements gaps, based on a weighting system that assigned high relevance for measurements associated to Marine for Weather Forecast over Polar Regions. This study concludes with a rank and mapping of the potential technologies and the suitable commercial platforms to cover most of the requirements of the top ten use cases, analyzing the Marine for Weather Forecast, Sea Ice Monitoring, Fishing Pressure, and Agriculture and Forestry: Hydric stress as the priority use cases.

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“…After a careful study, it was found that configurations (e) (using a passive magnetic Attitude Determination and Control System ADCS) and (f) (Earth Centred Inertial ECI velocity alignment with nadir or Sun constraint ADCS and Earth Centred Fixed ECF velocity alignment with nadir or radial constraint ADCS) satisfy the link and the power budget requirements, although the configuration (e) requires deployable solar panels, and downlooking payload antenna (to be designed). Due to the lower risk the final selected configuration for 3 Cat-2 platform was a 6U CubeSat [22], (f) in Fig. 1 without any deployables.…”

Section: B Platform Selectionmentioning

confidence: 99%

3Cat-2—An Experimental Nanosatellite for GNSS-R Earth Observation: Mission Concept and Analysis

Carreño-Luengo

Camps

Via

et al. 2016

IEEE J. Sel. Top. Appl. Earth Observations Remote Sensing

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Abstract-Global Navigation Satellite System Reflectometry (GNSS-R) is a multi-static radar using navigation signals as signals of opportunity. It provides wide-swath and improved spatio-temporal sampling over current space-borne missions. The lack of experimental datasets from space covering signals from multiple constellations (GPS, GLONASS, Galileo and Beidou) at dual-band (L1 and L2), and dual-polarization (Right and Left Hand Circular Polarization: RHCP and LHCP), over the ocean, land and cryosphere remains a bottleneck to further develop these techniques. 3

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<sup>3</sup>Cat-2: A P(Y) and C/A GNSS-R experimental nano-satellite mission

Cited by 16 publications

References 1 publication

Wetland monitoring with Global Navigation Satellite System reflectometry

Wetland monitoring with Global Navigation Satellite System reflectometry

Selection of the Key Earth Observation Sensors and Platforms Focusing on Applications for Polar Regions in the Scope of Copernicus System 2020–2030

3Cat-2—An Experimental Nanosatellite for GNSS-R Earth Observation: Mission Concept and Analysis

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