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- W2279355875 abstract ". Canada's RADARSAT Constellation Mission (RCM) will have the capacity to acquire C-band compact polarimetry (CP) data in all imaging modes over swaths up to 500 km wide. Our study aimed to assess and develop the utility of RCM CP data for the purpose of lake ice breakup monitoring. The breaking ice and open water information content of RADARSAT-2 (R2) polarimetric data and simulated RCM CP data was compared. Despite relative losses in terms of polarization diversity and radiometric sensitivity, RCM-type CP data were concluded to make a good source of information in support lake ice breakup monitoring. For that reason, a CP-based approach, called CP_LakeIceBC, to classify breaking ice and open water for the purpose of lake ice breakup monitoring was developed. CP_LakeIceBC is driven by incidence angle information, uses five CP backscatter variables (RH, RR, RV/RH, RR/RL, and conformity), and is compatible with high- and medium-resolution RCM-type CP products. Application of CP_LakeIceBC to representative simulated products yielded classification accuracies ranging from 73.2 to 99.1% and 60.8 to 99.5% for breaking ice and open water, respectively.Résumé. La mission de la Constellation RADARSAT (MCR) du Canada aura la capacité d’acquérir des données en polarimétrie compacte (CP) en bande C dans tous les modes d’imagerie, sur des fauchées allant jusqu’à 500 km de large. Notre étude visait à évaluer et développer l’utilité des données en CP de la MCR à des fins de surveillance des débâcles lacustres. Le contenu de l’information sur l’eau libre et la rupture des glaces a été comparé à partir de données polarimétriques de RADARSAT-2 (R2) et des données en CP de la MCR. Malgré les pertes relatives en termes de la diversité de la polarisation et de la sensibilité radiométrique, il a été conclu que les données en CP de type MCR sont une bonne source d’information de soutien pour la surveillance des débâcles lacustres. Pour cette raison, une approche fondée sur la CP, nommée CP_LakeIceBC, a été développée afin de classifier la rupture de la glace et l’eau libre à des fins de surveillance de la débâcle lacustre. CP_LakeIceBC est déterminée par l’information sur l’angle d’incidence, elle utilise cinq variables CP de rétrodiffusion (RH, RR, RV/RH, RR/RL et conformité), et elle est compatible avec les produits de CP de type MCR à haute et à moyenne résolution. L’application de CP_LakeIceBC aux produits simulés représentatifs a donné des précisions de classification pour la rupture de la glace et l’eau libre allant de 73,2 % à 99,1 % et de 60,8 % à 99,5 %, respectivement." @default.
- W2279355875 created "2016-06-24" @default.
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- W2279355875 date "2015-09-03" @default.
- W2279355875 modified "2023-09-25" @default.
- W2279355875 title "Compact Polarimetry in Support of Lake Ice Breakup Monitoring: Anticipating the RADARSAT Constellation Mission" @default.
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- W2279355875 doi "https://doi.org/10.1080/07038992.2015.1104637" @default.
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