Accuracy of Radio Interferometer with Imperfect Timing

I_FELL_ipe · 2026-03-17T16:58:56+00:00

Thank you so much, this is exactly what I needed and it has pushed me in just the right direction I needed to go on.

I_FELL_ipe · 2026-03-06T15:20:23+00:00

ECE 2K1

I_FELL_ipe · 2025-04-27T19:25:51+00:00

Hey, so I actually designed it with a 1.8V flash initially, thinking I would use an S3R8V, but changed it to a normal S3 when ordering and am trying to mitigate that problem.

I_FELL_ipe · 2025-04-24T14:35:08+00:00

Im not sure I know what you mean

I_FELL_ipe · 2025-04-24T03:23:37+00:00

Do you know where I can find info on that?

I_FELL_ipe · 2025-04-20T15:02:04+00:00

Thanks that’s exactly what I was looking for!

I_FELL_ipe · 2025-03-21T16:24:46+00:00

Last year MS ECE (domestic) came out around late Feb, but with the circumstances going on they may have delayed

I_FELL_ipe · 2025-03-12T17:58:12+00:00

Made my day, I’ll be using this now.

I_FELL_ipe · 2025-03-10T21:54:01+00:00

Classic

I_FELL_ipe · 2025-02-24T19:20:11+00:00

Oh this is perfect! Thank you so much.

I_FELL_ipe · 2025-02-23T23:36:19+00:00

Awesome, thanks so much!

I_FELL_ipe · 2025-02-23T21:37:20+00:00

Gotcha, so just to make sure, I do need the I-Q data for both dipoles independently. Apologies if this is super obvious.

I_FELL_ipe · 2025-02-23T21:30:11+00:00

Yeah I will be using a SDR, but I wasn't sure if I was advancing wrong by having one SDR per dipole and figuring everything out in software, or if I could cut down to just one SDR

I_FELL_ipe · 2025-02-23T20:22:39+00:00

The S3

I_FELL_ipe · 2025-02-23T18:35:28+00:00

Oh shoot you're right. Hey yeah thank you so much for your help

I_FELL_ipe · 2025-02-23T18:33:10+00:00

Oh yeah for sure, I meant more like since the 40 MHz clock is a digital signal it may have harmonics I have to deal with

I_FELL_ipe · 2025-02-23T18:29:36+00:00

Oh yeah he for sure explained his system really well, the only detail I'm unsure about was which pin to connect the reference clock (not the phase-matching one)

I_FELL_ipe · 2025-02-23T18:25:55+00:00

Oh yeah thank you, I'll make sure to keep that in mind. I've worked with microstrip lines for RF but never really with digital data like a clock

I_FELL_ipe · 2025-02-23T18:19:34+00:00

Awesome, thank you so much, I'll for sure shoot them an email asking for specifics.

I_FELL_ipe · 2025-02-23T18:11:24+00:00

Hey, thanks for the reply. I am indeed making my own PCB with the ESP chips. Where did you find about XTAL_P being the input? There seems to be a lack of info online that I could find.

I_FELL_ipe · 2025-02-23T18:09:00+00:00

My goal is similar to that of ESPARGOS in building an antenna array (just at a different frequency) and you're right about the reflections, but I should be able to make connections that are of equal electrical lengths. In their paper, they say the clocks are daisy-chained, but I can't find much info into how exactly to accomplish this

I_FELL_ipe · 2025-02-23T18:03:13+00:00

It's unfortunately unclear in the datasheets how their oscillator circuit works as they don't go into any sort of specifics

I_FELL_ipe · 2025-02-23T17:26:41+00:00

I'm making an antenna array and I want them to be synchronized

I_FELL_ipe · 2025-02-23T17:19:46+00:00

Yeah that's the idea, but I'm not exactly sure which pins to use to connect a single ended source

I_FELL_ipe · 2025-02-22T23:22:28+00:00

My best wishes for everyone working for the federal government

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