The TripleSat constellation: a new geospatial data service model

Abstract

a 21st century aerospace technology co., ltd., Beijing, china; b 21st century aerospace technology (asia) pte. ltd., singapore ABSTRACTWith the increase of different sensors, applications and customers, the demand from data providers and users is for a new geospatial data service model, which supports low cost, high dexterity, and which would provide a comprehensive service. Based on such requirements and demands, the 21AT TripleSat constellation terminal and data delivery and management system has been developed by a Beijing based high-tech enterprise, Twenty First Century Aerospace Technology Co., Ltd. (21AT). The company is the first commercial Earth observation satellite operator and service provider in China. This new geospatial data service model allows the user to directly access multi-source satellite data, manage the data order, and carry out automatic massive data production and delivery. The solution also implements safe and hierarchical user management, statistical data analysis, and automatic information reports. In addition, a mobile application is also available for users to easily access system functions. This new geospatial solution has already been successfully applied and installed in many customer sites in China, and is now available globally for international clients interested in fast geospatial solutions. It enables the success of customers' operational services. Besides providing TripleSat Constellation images, the multi-source data access system also allows the users to access other satellite data sources, based on customized agreement. This paper describes and discusses this new geospatial data service model.

Tests with SAR Images of the PAZ Platform Applied to the Archaeological Site of Clunia (Burgos, Spain)

“…In this case, we chose images captured by the TripleSat 2 satellite, which is part of a network together with two other satellites with the same characteristics. The TripleSat satellite, put into orbit in 2015 [14], provides a panchromatic band at 0.8 m/pixel resolution, and four bands at 3.2 m/pixel (NIR, Red, Blue, Green). The acquisition of these multispectral images is tried to coincide with the summer and autumn periods, corresponding to 2016 and 2017.…”

“…However, Tapete and Cigna [28] (pp. [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25] have shown that the joint use of multiple SAR images at different time points in the same study area can reduce speckle by providing images of greater clarity than treating them individually. This reduction is carried out through the co-register function, which implies the creation of a stack of images, with one referent, and the rest-subordinate.…”

China’s high-resolution optical remote sensing satellites and their mapping applications

“…In 2015, a British-made TripleSat satellite constellation was launched (Wen et al 2017), consisting of three optical remote sensing satellites with 1 m panchromatic and 4 m multispectral imaging ability. This satellite constellation can achieve 1 day of revisit.…”