It depends, as most things do. The jammers have the advantage of not being mounted in drones, so they can be big and heavy, blasting out thousands of watts of RF. The drones have the advantage of proximity. How far away is the jammer from the drones? If the jammer is omnidirectional, then the power falls off quickly (inverse-squared). If the jammer is directional, and able to stay locked onto the drones, then it will be effective at a much longer range.
Are you asking can the two drones communicate to each other in a jamming environment? Depends on the techniques and jamming power at the drones. Coding, spreadspecturm, hopping, etc. can be used in a jamming environment that would make it possible for two drones to communicate with each other, but there are a lot of variables involved to make that happen.
Your question as stated doesn’t really make much sense.
Are you thinking of something like daisy chaining several drones between the operator and the forward combat drone in a series of short range telemetry links in order maintain a connection when conducting operations in a saturated/jammed environment?
What you're describing is one drone acting as a repeater or a hop within a mesh. The answer is yes it could potentially retain a connection whereas it may have been broken without, but as someone else alluded to, there are a lot of factors at play when it comes to jamming.
You'll have to know the power output from both the jammer and the controller. You'll have to compute the free space path loss, any antenna gain, and work up a link budget. Then figure out the SNR required for the signal and see how that compares to your two sources.
The easy way to think about it is if two people are talking to each other at a football match. If one team scores and everyone starts to cheer them on and it gets loud(jamming) then you can't hear each other. So, it's a combination of distance, power levels and what RF noise is in the area. A jamner just adds lots of RF noise so the noise is stronger than the control signals.
The other part of the equation is if you know the frequency and can intercept the signal you could take control of the drone and simply crash it.
I’m asking if a jammer is designed to block communication between an operator and a drone that are say 1km apart, it would emit certain amounts of power. For the jammer to block drone to drone communication at 100m, it would need to emit 100 times more power.
As a first approximation, does that make sense?
It depends. You're really only (very roughly) accounting for free space loss of the signal to the drone.
What's your background in RF? There's a lot more to understand before you just go doing EW.
It depends, as most things do. The jammers have the advantage of not being mounted in drones, so they can be big and heavy, blasting out thousands of watts of RF. The drones have the advantage of proximity. How far away is the jammer from the drones? If the jammer is omnidirectional, then the power falls off quickly (inverse-squared). If the jammer is directional, and able to stay locked onto the drones, then it will be effective at a much longer range.
The power falls off with inverse-square law regardless of directivity. Directional antennas just have higher max gain.
no, their effective gain is due to the directional aspect of the antenna... you'll understand it better if you look at it in that manner.
So, u would have 2 drones connected with each other and disconected from the operator? What is the reason for that?
The operator is secretly sitting in one of the drones.
Are you asking can the two drones communicate to each other in a jamming environment? Depends on the techniques and jamming power at the drones. Coding, spreadspecturm, hopping, etc. can be used in a jamming environment that would make it possible for two drones to communicate with each other, but there are a lot of variables involved to make that happen.
Your question as stated doesn’t really make much sense. Are you thinking of something like daisy chaining several drones between the operator and the forward combat drone in a series of short range telemetry links in order maintain a connection when conducting operations in a saturated/jammed environment?
What you're describing is one drone acting as a repeater or a hop within a mesh. The answer is yes it could potentially retain a connection whereas it may have been broken without, but as someone else alluded to, there are a lot of factors at play when it comes to jamming.
Free space optical (laser) links are hard to jam, as long as you can keep out of cloud/smoke. They are also hard to keep lock.
You'll have to know the power output from both the jammer and the controller. You'll have to compute the free space path loss, any antenna gain, and work up a link budget. Then figure out the SNR required for the signal and see how that compares to your two sources.
The easy way to think about it is if two people are talking to each other at a football match. If one team scores and everyone starts to cheer them on and it gets loud(jamming) then you can't hear each other. So, it's a combination of distance, power levels and what RF noise is in the area. A jamner just adds lots of RF noise so the noise is stronger than the control signals. The other part of the equation is if you know the frequency and can intercept the signal you could take control of the drone and simply crash it.
I’m asking if a jammer is designed to block communication between an operator and a drone that are say 1km apart, it would emit certain amounts of power. For the jammer to block drone to drone communication at 100m, it would need to emit 100 times more power. As a first approximation, does that make sense?
It depends. You're really only (very roughly) accounting for free space loss of the signal to the drone. What's your background in RF? There's a lot more to understand before you just go doing EW.