intersatellite communications over earth

Viasat real-time space relay

Intersatellite communication leveraging Viasat's advanced space, 地面, and networking infrastructure for real-time, 全局数据传输

man planning intersatellite communications

Viasat enables real-time data links through intersatellite communication

Also known as "crosslinking," intersatellite communication allows satellites in a constellation to link to one another and relay data in space. Since small satellite constellations in low Earth orbit (利奥) are not in constant contact with the 地面, intersatellite links allow data to be shared between adjacent satellites. Viasat offers several types of crosslinking solutions, including Ka-band and two types of V-band using a phased array antenna. By placing a miniature modem and router on each satellite, the constellation can have full transmit and receive capability for real-time data links.


Cost-effective data relay capabilities for 利奥 operators

许多卫星, 或者太空飞行器, operating in 利奥 routinely collect data, such as Earth and weather observations, radar measurements and other science data, that must be sent back to Earth in real-time. In choosing how to transport this data back to Earth for analysis and distribution, satellite operators often must consider a tradeoff between data latency, the time between data collection to when it is received back on Earth, 和成本. 为了克服这个问题, Viasat is developing a space relay capability that is intended to give 利奥 operators the ability to send data — in real-time, from all around the globe — over the planned ViaSat-3 geostationary orbit (地理) network.

ViaSat-3 satellite in space

Anticipated to leverage the combined power of Viasat's satellite, 实时地球, 以及网络解决方案

Viasat's real-time space relay solution brings together the best of our space, 地面, and networking technologies to serve near-Earth space users. At the heart of the solution is our planned global ViaSat-3 constellation, anticipated to deliver 1Tbps capacity/satellite for secure, 可靠的, 可扩展的吞吐量. Our space terminals are expected  to deliver a turnkey space relay solution,  providing all the network and radio hardware necessary to access the ViaSat-3 constellation — and our growing 实时地球 地面 station network provides fast, 可靠的 下行s across 6 continents, allowing satellite operators to command, 下行, and rapidly disseminate 地理, 利奥, and MEO data in a timely and secure manner with real-time streaming to your end point of choice

A fast, 灵活的, and scalable solution for near-earth operators

With the pending ViaSat-3 launch, Viasat's real-time space relay capabilities are expected to further enhance our fast, 灵活的, 可扩展的解决方案.


  • On-demand access to critical data
  • Low  latency for time-critical data,, allowing you to send/receive in real-time
  • Up to 100 GB/orbit | commercial Ka-bands

Flexible and resilient architecture

  • Maintain custody of SV even when it isn’t in view of a 地面 station 
  • Adaptable  transport selection (RTE/SR)
  • Seamless interoperability across networks, supporting  S/X/Ka bands
  • Optimized for mission and TT&C数据


  • Leverages our growing global network of 实时地球 地面 stations and high-capacity satellites to deliver  persistent, global coverage over poles, 海洋, 偏远地区
  • High-capacity satellites combined with high-speed 下行s help maximize throughput

Viasat has been selected to deliver real-time, near-Earth communications for NASA CSP

Viasat was recently selected by NASA to support its Communications Service Project (CSP), which seeks to accelerate the development of near-Earth communications by partnering with commercial satellite communication (卫星通信) providers.