Patrick explained everything clearly: ARTS has robust tools for simulating 
profiling radars, but these are in the development version. I should note that 
I owe the repository an example case for MCRadar, which I expect to submit soon.

On 7/2/18, 4:40 AM, " on behalf of 
Patrick Eriksson" < on behalf of> wrote:

    Dear Alfred,
    > I'm glad to learn that the development version can handle the radar 
    > observation. But, I want to know what this MC module can simulate, the 
    > reflection coefficient of cloud or the thermodynamic radiation?
    The MC module is called MCRadar.
    I am not sure about what you mean with "thermodynamic radiation", but 
    MCRadar is intended to mimic radar measurements, including multiple 
    scattering, attenuation and antenna pattern. So I am assume it returns 
    what you are looking for.
    For more details contact: Adams, Ian <>
    The module restricted to single scattering is called iyActiveSingleScat.
    > As I mentioned before, I  did some changes to the stable version 2.2.64, 
    > added a radar transmitter and got the simulated reflection coefficient 
    > data. However, there  is no benchmark result for me to verify the 
    > validity. If the development version can simulate reflection then I can 
    > compare those two results.
    This was in fact my thinking, but not clearly expressed in my email. Why 
    not start with light rain and compare to iyActiveSingleScat (as this 
    method is very fast), and if all OK continue with MCRadar and cases with 
    more strong scattering.
    We have not made any extensive comparisons, but in the tests I have done 
    iyActiveSingleScat and MCRadar agree as long multiple scattering can be 
    ignored. It seems though that MCRadar has a bias just above the surface, 
    but not critical as this is inside the clutter zone.
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