In brief I am working on a non profit project to prevent poaching. I am an old time analog groupie so some of this new tech I don't understand. I have built an air frame to observe and prevent poaching, I have tested the system with analog systems on 433mhz for the controls of the air frame and 1.2ghz for video transmitter. Currently we have got out to 160km with RC control and also with standard def. video using basic equipment.
The governing body of this project, has delivered a unanticipated new requirements that I believe can only be done with a Digital LAN setup.
1st. They now want High Def video which based on my research can only be done on 2.4ghz and it must be available at a range of 160km.
2nd. They want bi-directional communications between the base station and the observation platform, so they can update or change waypoints on the fly.
3rd. They want ( and I don't know if this is even possible to do) (there IS NO CELLPHONE COVERAGE) to take a cell phone to make a call to the park rangers on the ground using the airframe as the relay. Better create a cell service at the base station, dial a phone number, the base station sends the signal to the airplane which relays the call to a cell phone on the ground in the hands of the park rangers while the airframe is circling over head.
4th the signals must be encrypted to prevent the poachers from tapping in and either seeing what the park rangers at the base station are seeing, or to prevent them from taking control of the aircraft.
5th because this is flying a airframe from ground the lowest latency possible must be kept
Now I have been looking at using this 30dbi Parabolic antenna http://www.l-com.com/wireless-antenna-24-ghz-30-dbi-steel-grid-antenna-n-female-connector combined with this 25W Amplifier, (this is where the Ham heads were having conniptions) for this project we have received government exemption to exceed 1w also we are using the 2.4ghz unlicensed. www.l-com.com/multimedia/datasheets/DS_HA241025GAI-NF.PDF
What I do not know (as I said I am an analogue old timer) is how to get the signals in and out using I guess a router to create a LAN Network.
Having done some digging in the commercial airframes they say the data transfer rate is 12mb/s @100km, it is encrypted at 256bit, and is 802. and uses Ethernet. This to me sounds like they are using a router tied into a parabolic antenna with an amplifier. On the air frame they are using whip omnidirectional antennas. To increase my range as I did with the analogue system, I was going to use directional antennas on the airframe. and for the cell phone transfer to use a Omni directional antenna
So I have 3 questions 1 how do I get the router on the air frame to go from digital to analogue to control the servos for the control surfaces, 2 How do I connect the router to send the data commands to the various systems, i.e. sending the signal to the autopilot to change way points, 3rd how do I set up a cell signal to use the cellphones to call the park rangers??
As I have said I am an old time analogue and I even with reading some things I still don't understand what I need and how to get it to work. Please let me know as the project's future is hanging in the balance.
Any information that you can share would be great, a list of parts and or a drawing of how things are connected would be awesome.
Thank you all.
The governing body of this project, has delivered a unanticipated new requirements that I believe can only be done with a Digital LAN setup.
1st. They now want High Def video which based on my research can only be done on 2.4ghz and it must be available at a range of 160km.
2nd. They want bi-directional communications between the base station and the observation platform, so they can update or change waypoints on the fly.
3rd. They want ( and I don't know if this is even possible to do) (there IS NO CELLPHONE COVERAGE) to take a cell phone to make a call to the park rangers on the ground using the airframe as the relay. Better create a cell service at the base station, dial a phone number, the base station sends the signal to the airplane which relays the call to a cell phone on the ground in the hands of the park rangers while the airframe is circling over head.
4th the signals must be encrypted to prevent the poachers from tapping in and either seeing what the park rangers at the base station are seeing, or to prevent them from taking control of the aircraft.
5th because this is flying a airframe from ground the lowest latency possible must be kept
Now I have been looking at using this 30dbi Parabolic antenna http://www.l-com.com/wireless-antenna-24-ghz-30-dbi-steel-grid-antenna-n-female-connector combined with this 25W Amplifier, (this is where the Ham heads were having conniptions) for this project we have received government exemption to exceed 1w also we are using the 2.4ghz unlicensed. www.l-com.com/multimedia/datasheets/DS_HA241025GAI-NF.PDF
What I do not know (as I said I am an analogue old timer) is how to get the signals in and out using I guess a router to create a LAN Network.
Having done some digging in the commercial airframes they say the data transfer rate is 12mb/s @100km, it is encrypted at 256bit, and is 802. and uses Ethernet. This to me sounds like they are using a router tied into a parabolic antenna with an amplifier. On the air frame they are using whip omnidirectional antennas. To increase my range as I did with the analogue system, I was going to use directional antennas on the airframe. and for the cell phone transfer to use a Omni directional antenna
So I have 3 questions 1 how do I get the router on the air frame to go from digital to analogue to control the servos for the control surfaces, 2 How do I connect the router to send the data commands to the various systems, i.e. sending the signal to the autopilot to change way points, 3rd how do I set up a cell signal to use the cellphones to call the park rangers??
As I have said I am an old time analogue and I even with reading some things I still don't understand what I need and how to get it to work. Please let me know as the project's future is hanging in the balance.
Any information that you can share would be great, a list of parts and or a drawing of how things are connected would be awesome.
Thank you all.