Re: phase difference between Tx/Rx1 Tx/Rx2

[Marcus D. Leech]

On 10/07/2020 07:13 PM, Xiang Ma wrote:
> Should the TX be the signal before it been received and after it been 
> transmitted?
>
> Thx
The phase of the TX signal, as seen at the RX will be some function of 
the propagation delay between the two, and the initial phase at the TX.
  That's basic conceptual stuff.

Since the TX and RX phase is determined by hardware that isn't 
necessarily mutually synchronized, (that is the RX LO and TX LO don't
  originate from the same hardware), determining the initial phase will 
require estimating what the phase difference due to
  geometry between the TX and RX is.    In radar applications, I 
understand that coding is used to help with this.  But I'm not a radar guy.

 But again this is basic conceptual stuff that is, to a first 
approximation, unrelated to the hardware that is being used.