Multi-user, Multi-mission: Spectrum monitoring and multi-tasking

CRFS’s next generation intelligent radio receivers, or RFeye Nodes as we call them, allow multiple users to run multiple independent sets of monitoring and geolocation tasks simultaneously using the same hardware. This maximises your return on investment.

Distributed networks may vary from a few Nodes over a small area like a building, to hundreds of Nodes across a whole country. Users can log on to any Node(s) in the network from anywhere in the world over IP; multi-user, multi-mission capabilities allow various stakeholders to access the same Nodes to run their own independent spectrum monitoring missions. To ensure critical missions are prioritised, a ‘lock’ can be placed on Nodes to allocate all resources to a given mission until completed.

Many to many connectivity

A simple example is shown below with two users, one located close to the Nodes of interest, the other many hundreds of miles away.

distributed remote connectivity

In this example, there are seven Nodes in total which are accessible to both User 1 and User 2. User 1, who is located local to the Nodes, has set up two separate groups of Nodes to be used for separate missions: Group A (red) with three Nodes and Group B (blue) with four Nodes. User 2 (located remote to the Nodes) has connected to the same seven Nodes, but is operating them as a single group for a single mission.

User 1 is running geolocation tasks as part of separate missions with Group A and Group B to locate two different transmitters. The transmitters are each located close to their respective Node groups. User 2 however, is trying to locate a third transmitter which is located in between groups A and B of User 1 and so has connected to all seven Nodes as a single group. Three of these Nodes have a good line of sight to the transmitter giving a geolocation result as shown.

multi-user multi-mission

This is a simplified example. Often there will be many more users accessing Nodes with many more tasks to be carried out. Multi-user, multi-mission capability then becomes extremely valuable as your hardware investment is maximised by using the same Nodes for spectrum monitoring and geolocation over multiple frequency bands of interest.

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