GPS performance with IMX412 Hires Camera EMI and Mitigation Techniques
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Currently I'm trying to get the GPS working on the Starling2 along with a custom airframe. After a bunch of experimentation I'm seeing that having specifically the hires camera (M0161) plugged in and running is causing a noticeable degradation in GPS quality. (Higher EPH, takes longer to acquire satellites/fix, etc.) Assumably, this is due to EMI.
Is this something anyone else has noticed with the hires? I’m hypothesizing it is because it is using proportionally more power and transferring more data (compared to the other cameras) that this is occurring/is more noticeable. Besides moving the GPS module further away, are there any other techniques or suggestions Modal has for reducing EMI noise? Namely,
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Shielding
- Any materials in specific for wrapping cables or blocking EMI, copper, EMI tape, others?
- Cables to shield, the gps wire? The Hires Coax, the M0161 itself, the camera board, barrier below the gps module, everything?
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MIPI Clock rates
- Bit of a long shot (I’m not really familiar with any of this) but I read online that sometimes changing the clock rate can help with EMI. Not sure if this an option, would help, or even possible. Wondering if I could apply this to the Hires. Again, a long shot.
- https://en.wikipedia.org/wiki/Camera_Serial_Interface
Any advice is much appreciated, thanks!
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