As someone who does both measuring and modeling.. Modeling is what gives you insight into things like sensitivity and variability. Measuring, to some extent, confirms what you modeled, or, that you¡¯ve got something wrong in the model.
Modeling also can give you a much wider tradespace - building a new model is essentially free.
I build a fair number of antennas for various uses - Here¡¯s an example: I¡¯ve got a spacecraft that has two dipoles about 5 meters long, crossed at right angles. Easy enough to model, or build a mockup and measure (a bit harder, but doable). But I might have a question about ¡°if there¡¯s an angular misalignment of 10cm at the tip, does that make a difference in my measurement¡±. Easy question to answer with modeling, very, very difficult with measurement (time consuming, if nothing else). Consider someone putting up a LPDA with 10 elements - modeling can tell you what happens to the performance if the elements are skewed by 10 degrees pretty quickly. Testing would be a pain.
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On Apr 9, 2025, at 10:05, Team-SIM SIM-Mode via groups.io <sim31_team@...> wrote:
?Hi Maynard
Electrical modelisation is appreciated as a first approche of computing in the history, after what we procede with computers simulation last twenty years, in present time there is no better then a good measurement at the desired frequency, its become possible with the cheap devices as nanovna , just need some good method and practice , lt should defeat all mathematical modelisations or PC simulations.
73s Nizar
