SONAR-INFO-p2018

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**1) Preliminary**

PSRP solves the transcendent system in R:

after variable insertion:

-SONAR:

-Marine environment:

**2)Detail input data: **

Marine environment:

**3)Intermediate detail results from PSRP: **

**4) Detail output data from PSRP **

Range ( R ) calculated with iterative numerical method :

Range ( R ) calculated with graphical method :

**5)Example to use PSRP**

SONAR:

F1 = 8000 Hz

F2 = 12400 Hz

A = 60 cm

H = 90 cm

RC = 1 Sec.

P(FA) = 10%

P(D) = 60%

Marine environment:

Prop. = Sph.

Ds = 15 Kn

SS = 2

we obtain:

-Intermediate data:

-Calculated distance R :

Control panel example:

**6)Download PSRP ( exe VB6 )**

**7)Observations on destroyer's noise levels**

The calculated noise levels are related to the second World War destroyers.

At present, new naval units noise levels are not known: that's why we suggest
to assume a speed value lower than the one
used for the example given.