SDR Technology, UAV Data Links & Tracking Antennas for Long-Range Communications

Software-Defined Radio Extends UGV Operations

By Mike Ball / 14 Oct 2021
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Simpulse has demonstrated how its SL200 software-defined radio (SDR) link can be used to extend the range of UGVs (unmanned ground vehicles) in the field. During an exercise conducted with INTRA Group, an emergency response organization that mobilizes robots to deal with nuclear accidents, the SL200 maintained video transmission in an area four times larger than nominal.

Simpulse’s long-range radio links for drones and robotics are capable of transmitting HD video over 80 km in Line-of-Sight (LOS) using only 600 mW of radio power. INTRA Group’s remotely operated robots use radio links for transmitting video, as well as command and control signals.

With traditional digital radio links, a major risk is losing the use of the robot when it exceeds the range of the radio link. Simpulse exceeds these limits by implementing a behavior similar to analog systems without an abrupt cut-off. When the vehicle leaves the nominal transmission area, a lower data-rate, more robust radio link is maintained. This link is used for the transmission of video at lower resolution that allows operators continue the mission. The operational area can thus be multiplied by a factor of four.

Beyond this area, when video can no longer be transmitted, a robust and even lower data-rate link is still ensured, with transmission of GPS coordinates and command and control of the vehicle. This makes it possible to drive the vehicle back within the nominal coverage area.

An engineer from INTRA Group commented: “The result of this test allows us to consider setting up very long-distance video links with a very robust transmission link. It is a strategic point for the INTRA Group.”

Emmanuel Hamman, CEO of Simpulse, commented: “INTRA Group’s robotics expertise has enabled us to demonstrate the unrivalled robustness of our radio link in extreme conditions, and to adapt our technology to these environments.”

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Posted by Mike Ball Mike Ball is our resident technical editor here at Unmanned Systems Technology. Combining his passion for teaching, advanced engineering and all things unmanned, Mike keeps a watchful eye over everything related to the unmanned technical sector. With over 10 years’ experience in the unmanned field and a degree in engineering, Mike’s been heading up our technical team here for the last 8 years. Connect & Contact