A drone, operating at 2.45 GHz, can be jammed if minimum of -55 dBm power is received by its antenna having a gain of 4 dBi. If the maximum available power from the transmitter of the jammer is 1.5 W, what should be the gain of the transmitting antenna of the jammer to jam the drone at a distance of 1200 m? Assume the jammer and the drone are in line of sight
Answers
Step-by-step explanation:
Anything is possible, but practically will be another issue.
Anything is possible, but practically will be another issue.If you were to do this you would need a 2 axis antenna tracker mounted on the multi to ensure that the directional antenna always faces the right direction.
Anything is possible, but practically will be another issue.If you were to do this you would need a 2 axis antenna tracker mounted on the multi to ensure that the directional antenna always faces the right direction.Antenna trackers are already used for long distance FPV flights, but is usually at the ground station, tracking a signal from an omnidirectional antenna mounted on the craft. They are heavy in relation to most multis where you want to save as much weight as possible for the longest flight times, requiring control board, servos and some form of power supply.
Anything is possible, but practically will be another issue.If you were to do this you would need a 2 axis antenna tracker mounted on the multi to ensure that the directional antenna always faces the right direction.Antenna trackers are already used for long distance FPV flights, but is usually at the ground station, tracking a signal from an omnidirectional antenna mounted on the craft. They are heavy in relation to most multis where you want to save as much weight as possible for the longest flight times, requiring control board, servos and some form of power supply.If you didnt use a tracker, as soon as you change orientation so the antenna is facing away from the transmitter you would loose signal reception, causing more issues than the “occasional jammer”. I mean, flying away from yourself is fine, but how do you get the craft back to you? Or its setup to fly in a clockwise circuit but you want to make a left hand turn? You may as well work out a way to make a control line multi that uses no radio signals at all if you just want to fly circles in one direction.
Anything is possible, but practically will be another issue.If you were to do this you would need a 2 axis antenna tracker mounted on the multi to ensure that the directional antenna always faces the right direction.Antenna trackers are already used for long distance FPV flights, but is usually at the ground station, tracking a signal from an omnidirectional antenna mounted on the craft. They are heavy in relation to most multis where you want to save as much weight as possible for the longest flight times, requiring control board, servos and some form of power supply.If you didnt use a tracker, as soon as you change orientation so the antenna is facing away from the transmitter you would loose signal reception, causing more issues than the “occasional jammer”. I mean, flying away from yourself is fine, but how do you get the craft back to you? Or its setup to fly in a clockwise circuit but you want to make a left hand turn? You may as well work out a way to make a control line multi that uses no radio signals at all if you just want to fly circles in one direction.Also jammers work by flooding the frequency with noise, they dont suck the signal from the air. Even with a directional antenna, all the jammer operator would need to do is turn the jammer on and you will still loose control of the model, so your just adding complications to a model that would be a waste of time.