Timeline for How do I implement accurate distance measuring (to ground) on a plane-like UAV for heights over 10m?
Current License: CC BY-SA 2.5
9 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jan 19, 2011 at 20:05 | vote | accept | fakemustache | ||
| Jan 19, 2011 at 20:05 | vote | accept | fakemustache | ||
| Jan 19, 2011 at 20:05 | |||||
| Jan 18, 2011 at 23:53 | comment | added | Mark | err, meant 3000ft in that first comment, oops | |
| Jan 18, 2011 at 23:47 | comment | added | Mark | SiverIMA (siversima.com) makes some front ends you could probably use to save yourself from the RF development, but they aren't cheap and likely overkill for this application. I've used the 10Ghz FMCW front end for prototype testing. | |
| Jan 18, 2011 at 23:46 | comment | added | Mark | that design is a good example but you could easily get to 3000m with a higher power PA (200mW maybe) and a more sensitive receiving circuit as well as improved post processing. Controlling the sweep in an intelligent manor and bringing the output of the LPF into a DSP for post processing will help a lot. At that point you've really built an FMCW radar and can get a fair bit of additional information out of it (weather conditions, type of ground cover, other planes under you, etc). The antenna used will greatly influence performance and what kind of information you can determine. | |
| Jan 18, 2011 at 15:11 | comment | added | vicatcu | make sure whatever you do is in compliance with emission regulations for your region | |
| Jan 18, 2011 at 12:54 | comment | added | fakemustache | We have considered this. It's not quite a "homebrew"-project, so I think we have the means to build, perhaps even buy a radar-altimeter. Thanks! | |
| Jan 18, 2011 at 11:28 | comment | added | Jaroslav Cmunt | There is also commercial equipment, like this: bennettavionics.com/radaraltimeter.html | |
| Jan 18, 2011 at 11:25 | history | answered | Jaroslav Cmunt | CC BY-SA 2.5 |