Delay-Tolerant Networking work:
Saratoga Bundle Protocol work Interplanetary Internet work HTTP-DTN

Work done with colleagues at Surrey Satellite Technology Ltd and NASA Glenn Research Center.
Defining and enhancing a protocol used operationally.

Now at Sourceforge.

Anti-aircraft guns on the deck of the Saratoga
USS Saratoga, Bikini Atoll (Chris Jackson)
Saratoga is a fast data transfer protocol for hop-by-hop transfers on privately-owned networks - including dedicated sensor networks and the intermittently-connected networks used for delay-tolerant networking. Saratoga is intended for private dedicated point-to-point links, where packet loss is caused by errors and corruption, not by congestion. Saratoga was first developed over a decade ago at Surrey Satellite Technology Ltd to download remote-sensing imagery from satellites, but has found wider interest, including for radio astronomy's Square Kilometre Array. Watch the video describing history and development of Saratoga.

Interplanetary Internet demonstrated from space using Saratoga

Working with NASA Glenn Research Center, Saratoga has been developed further, placed in orbit onboard SSTL's TechDemoSat-1, and written up as an internet-draft for the Internet Engineering Task Force, aiming for experimental status. Saratoga is described in:

Available code:

See also the Saratoga project pages and the Saratoga wiki.

Saratoga has developed and been explored in research over the past few years:

Saratoga has also previously been used for Delay-Tolerant Networking (DTN) Bundle Protocol transfers. Using Saratoga, we are the first to demonstrate Bundle Protocol transfers from space for the Interplanetary Internet.

Development on Saratoga and resulting internet-drafts sprang from the collaboration involved in working with CLEO, the Cisco router in Low Earth Orbit.

Saratoga is named for the USS Saratoga, sunk near Bikini Atoll and now a popular diving site.

Lloyd Wood (