"Internet Plus" represents a new form of society that provides vast platforms of reform

innovation

and development. With the gradually deepening integration of the Internet and traditional industries

the "Internet Plus" has prompted profound transformation and has generated obvious influence on many traditional industries

such as manufacturing

agriculture

finance

education

and logistics. In the big data era

the instrumental acquisition of geo-information expands from professional air-space-ground sensors

such as satellites

airplanes

and UAVs

to billions of non-dedicated sensors connected to the Internet of things. Ubiquitous geospatial data sensors with communication

navigation

positioning

photo/video imaging

and broadband data transmission functions are in development. Furthermore

millions of video cameras in cities can continuously provide images with PB and EB data size. These ubiquitous sensors can greatly enhance the data acquisition ability of geomatics. The application of geomatics is becoming increasingly pervasive

expanding from expert users to global public users. However

given the volume

velocity

variety

and veracity of data

effectively extracting useful information from big data is difficult

thus resulting in situations of "massive data

missing information

and unavailable knowledge".The ultimate goal of geo-spatial information services is to deliver the right data

information

or knowledge to the right person in the right place at the right time. To provide global all-time

all-weather services to everyone

we should overcome the defects of existing geospatial information service systems

such as limitations of coverage area

slow response

and weaknesses of systematic interoperability.Therefore

we propose an "Internet Plus" space-based information service coupled with ground networks. In line with the principles of "one satellite with multiple functions

multi-satellite networking

and multiple network cooperation"

a proposal for an integrated space-based information service system is presented. This space-based network with remote sensing

navigation

and communication functions can be seamlessly integrated with existing ground Internet and mobile networks. With the support of spatial-temporal big data

cloud computing

and intelligent terminals for space-based information services

all sectors of the national economy

industries

and the vast majority of public users will be provided with rapid

accurate

and intelligent positioning

navigation

timing

remote sensing

and communication services in real time. Considering the development condition of aerospace and information technologies

we describe a trilogy of an "Internet Plus"space-based information service system construction: web GIS in the primary stage

sensor web GIS in the intermediate stage

and smart sensor web GIS in the advanced stage. The key characteristics of the three stages are emphasized. Finally

the development prospects of the"Internet Plus" space-based information service system and its key technologies are discussed.