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Thread: Sonar Quiz #12

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  1. 07-24-2014, 06:33 PM #11
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    rnvinc
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    Default Sonar Quiz #12

    Bob gave a good description...

    Basically...sound has natural tendencies...

    Given the same amount of "push" (from the transmitter in this case)...low frequencies will travel further ....

    This is also part of the reason why the edges of the 800kHz HB SI image is darker out to the sides of the display ...the higher frequency just will not travel as far as the 455kHz...(the beam form is also part of this reason)...

    Conversely, the 455kHz HB SI image is always fuzzier (than the 800kHz)...because the lower frequency sine wave is "missing" minute targets that the 800kHz frequency sine wave will "hit"...

    Name: 499BB279-5508-40C4-8682-DF3EC063F020.jpg Views: 227 Size: 176.6 KB

    Rickie
    Last edited by rnvinc; 08-23-2017 at 10:34 AM.
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