Bouncing a LoRa message off the moon
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Bouncing a LoRa message off the moon
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Re: Bouncing a LoRa message off the moon
#2of all the things to bounce off the moon, why a consumer IoT protocol?
Alien 1: The humans are talking again. Alien 2: What did they say? Alien 1: The front door is locked.
Re: Bouncing a LoRa message off the moon
#3of all the things to bounce off the moon, why a consumer IoT protocol? Alien 1: The humans are talking again. Alien 2: What did they say? Alien 1: The front door is locked.
A consumer protocol, but also way over consumer power level (350W). No wonder it's the furthest LoRa message sent. Let's bump it up to 1kW and break the record again...
Re: Bouncing a LoRa message off the moon
#4of all the things to bounce off the moon, why a consumer IoT protocol? Alien 1: The humans are talking again. Alien 2: What did they say? Alien 1: The front door is locked.
Because it doubles the range of the PR stunt.
If they had driven the chip with a raspberry pi (or, more importantly, said so enough times to land the keyword in the article), they could have quadrupled the range of the PR stunt.
Re: Bouncing a LoRa message off the moon
#5of all the things to bounce off the moon, why a consumer IoT protocol? Alien 1: The humans are talking again. Alien 2: What did they say? Alien 1: The front door is locked.
Just a guess: given that LoRa operates on line of sight, when trying to update a gateways with sensor status (e.g. GPS position of tracked item) the operator won't be able to get realtime reports if the gateway isn't positioned at a high enough altitude relative to the sensor.
You can mitigate this by having many gateway/collectors at high points on buildings/hills, but bouncing signals off the moon seems like an interesting alternative for connectivity in low coverage locations...
Perhaps this is clear to you I'm just trying to think it through out loud.
Re: Bouncing a LoRa message off the moon
#6of all the things to bounce off the moon, why a consumer IoT protocol? Alien 1: The humans are talking again. Alien 2: What did they say? Alien 1: The front door is locked.
Amateur radio operators routinely do earth-moon-earth radio communication using specifically designed protocols. So using LoRa here is surely the point: to show what it can do — not that it can be done at all.
Re: Bouncing a LoRa message off the moon
#7of all the things to bounce off the moon, why a consumer IoT protocol? Alien 1: The humans are talking again. Alien 2: What did they say? Alien 1: The front door is locked.
Just a guess: given that LoRa operates on line of sight, when trying to update a gateways with sensor status (e.g. GPS position of tracked item) the operator won't be able to get realtime reports if the gateway isn't positioned at a high enough altitude relative to the sensor. You can mitigate this by having many gateway/collectors at high points on buildings/hills, but bouncing signals off the moon seems like an int…
Moonbounce isn't practical for any real application nowadays. It's a fun experiment and a PR stunt.
Re: Bouncing a LoRa message off the moon
#8I’m having a hard time seeing what’s special about this. This has been a HAM radio thing for a long time.
https://en.m.wikipedia.org/wiki/Earth–Moon–Earth_communicati...
Re: Bouncing a LoRa message off the moon
#9Earlier quoted context omitted.
Just a guess: given that LoRa operates on line of sight, when trying to update a gateways with sensor status (e.g. GPS position of tracked item) the operator won't be able to get realtime reports if the gateway isn't positioned at a high enough altitude relative to the sensor. You can mitigate this by having many gateway/collectors at high points on buildings/hills, but bouncing signals off the moon seems like an int…
Moonbounce isn't practical for any real application nowadays. It's a fun experiment and a PR stunt.
Why isn't it practical? Background noise makes it unreliable?
Re: Bouncing a LoRa message off the moon
#10of all the things to bounce off the moon, why a consumer IoT protocol? Alien 1: The humans are talking again. Alien 2: What did they say? Alien 1: The front door is locked.
Just a guess: given that LoRa operates on line of sight, when trying to update a gateways with sensor status (e.g. GPS position of tracked item) the operator won't be able to get realtime reports if the gateway isn't positioned at a high enough altitude relative to the sensor. You can mitigate this by having many gateway/collectors at high points on buildings/hills, but bouncing signals off the moon seems like an int…
This is a cool stunt, but it's not at all practical for IoT communications. For one thing, it requires a big dish and a huge amount of transmission power to get a barely-distinguishable reflected signal.
The other big issue is that it doesn't scale, because there's no directionality: the reflected signal will be scattered off the moon and received everywhere on the hemisphere of earth where the moon is above the horizon. So every single device that tried to use this strategy would have to contend for the same chunk of bandwidth.