I am trying to use radar to measure the dielectric constant of an object. My understanding is that the round trip to the object and back(2D) is calculated as:
2D= C*T (C is used as the speed of light in air and T is the Round-trip time) and the calibration is done accordingly. With the dielectric object, the speed slows based on the dielectric constant, and the Round- trip time changes. My experiments so far indicate that this change in speed is not explicitly accounted for as the distances inside the range bins must remain the same as calibrated. I tried plotting interface angles (air-object) but did not see any effect My interpretation is that we need the actual round trip time; would you agree?. If this is so, is this available from the raw data? Any help with capturing this data would be very helpful.
