SSC space expertise on the ground FMV Sensor Symposium Stockholm, September 2016 Björn Ohlson and Petrus Hyvönen
Satellite Services for Surveillance & Reconnaissance Navigation Communication and Space Situation Awareness with personnel, facilities and security
SSC business areas Science Services Satellite Management Services Engineering Services
Esrange Space Centre with satellite ground station
Esrange satellite control centre Stockholm Teleport 24/7/365 services
SSC supports FMV in the cooperation with France and Germany for satellte data reception services
Global ground station network SSC PrioraNet - The world s largest multi-mission network 7
SSC Infinity A new, expanded network for very frequent contacts
SSC can serve sensors and infrastructure for sensor systems installations: Surveillance and Reconnaisance at high latitudes Infrastructure for Navigation systems Existing and future Communication techniques SSA sensors and plan to launch sensors into orbit from Esrange
Ground Network for Remote Sensing After imaging, a ground station is needed to transfer the images Most users prefer to have a short time (latency) between image acquisition and transfer to ground Covering the polar areas with access to each orbit gives max latency of about 80 minutes Adding additional strategically placed stations can give direct reception or low latencies <30 minutes Design of ground network is an important part of reaching a high performance system
Example latency for a ground network
Optical Communications Extremely high throughput New operational concepts required due to interrupted data transfers Feedback required, no unreliable protocols SSC is reference operator in a European optical link project Low rate optical communications from Niwaka, using morse communications!
Navigation A number of satellite navigation systems being operated / built: - GPS (US) - Galileo (Europe) - GLONASS (Russia) - BeiDou(China) - Networks of receiving stations monitor the precision, quality and integrity - Correction parameters are uploaded to the satellites - SSC ground stations sites around the world provide a possibility for such calibration stations - SSC is hosting a number of such facilities on its sites - SSC is also providing Telemetry & Tele-command during the early phases of Galileo satellite missions
Space Situational Awareness In the same way as SSC has designed its ground network to have frequent contact with satellites for communication,s the sites are advantageous for frequent observability of objects Active and inactive satellites, discarded launch stages and fragmentation debris that orbit Earth. The SSC sites can host systems för Space Surveillance and Tracking Radar sensors or Optical sensors Can be combined with optical communications
Space surveillance and tracking The SST system must have: Survey Sensors: radar, optical Tracking Sensors: radar, optical, laser ranging Data center for processing astrometric data Services: o Object Catalogue o Orbit determination and correlation o Collision warning o Fragmentation detection and tracking
Space surveillance and tracking SENSORS Optical telescopes (high altitude objects) Radars (low altitudes objects) Laser ranging instruments Space based instruments (mainly optical) Current [economical] break-point between Radar and Optical observations is at 1000-1100km altitude.
We help earth benefit from space
Thank You! bjorn.ohlson@sscspace.com petrus.hyvönen@sscspace.com