![]() |
SUBSIM: The Web's #1 BBS for all submarine and naval simulations since 1997 |
|
![]() |
|
Thread Tools | Display Modes |
![]() |
#16 |
Watch
![]() Join Date: Feb 2019
Posts: 15
Downloads: 1
Uploads: 0
|
![]()
Thank you Fanders! That was exactly what i was looking for. I Can't wait to test that out.
|
![]() |
![]() |
![]() |
#17 |
Swabbie
![]() Join Date: Jul 2019
Location: Sweden (AO5423)
Posts: 10
Downloads: 4
Uploads: 0
|
![]()
Relevant question!
![]() My settings of the high and low pass filters was at the deaufult level: High Pass - o khz (clockwise maximum) Low Pass - 22 khz (counter clockwise maximum) |
![]() |
![]() |
![]() |
#18 | |
Helmsman
![]() Join Date: Nov 2007
Posts: 102
Downloads: 38
Uploads: 0
|
![]() Quote:
Would you mind sharing the mathematical equation resulting in that line? From the graph I get something like Y = 5555.55 * X - 10833.33 (meter) right? Or in hm Y = 55.55 * X - 108.33 |
|
![]() |
![]() |
![]() |
#19 |
Swabbie
![]() Join Date: Jul 2019
Location: Sweden (AO5423)
Posts: 10
Downloads: 4
Uploads: 0
|
![]()
Of course!
The linear equation for the trendline is: y=5273x-9656 |
![]() |
![]() |
![]() |
#20 |
Seaman
![]() Join Date: Jul 2009
Posts: 36
Downloads: 138
Uploads: 0
|
![]()
Ok Here's what i have:
Tutorial, we'll start out with a basic setup. High/low pass rotated to the right, gain at about 1-2. We hear a contacts, but they're very "wide", it's almost impossible to give a precise bearing. 1. slowly raise "gain" level. At some point your contact rapidly becomes louder. Stop immediately. 2. hight pass - will help us to isolate engine/screw sound low pass - will help to isolate asdic source. (i am not sure if it shall work like that but it's how it works right now). 3. Rotate "High pass" a littlebit to the left - 2 points will do. 4. now check your contact how it "behaves" if you're rotating from side to side it shall sound like this "thumbthumbthumbthumb - HRKSZRKSZ - thumbthumbthumbthumb" you shall have an area where your contact sounds like very loud, broken radio. 5. Turn "high pass" more to the left and adjust "gain" accordingly: if you can't hear "broken radio" type of noise right in the middle, add some more "Gain" lvel and scan again. if "broken radio" is to wide - lower "gain" level. 6. Now you narrowed you contact to 2-3 deg. Bravo! You have precise bearing. ( in tutorial i reached precise bearing for "High pass " set about 12-14) 7. if your contact suddenly stops making "broken radio" type of noises it means that he's moving away, and you have just discovered it. Report to the commander! contact, bearing XX, moving Away. A "Gain" level will give you quite good info about how far is your contact, and if he's moving away, or getting closer. Good luck! Last edited by Kermit the Frog; 11-20-2019 at 05:31 PM. |
![]() |
![]() |
![]() |
#21 |
Watch
![]() Join Date: Oct 2019
Location: Near crush depth. Maybe.
Posts: 18
Downloads: 6
Uploads: 0
|
![]()
A method I use to center a contact is to look for where the "ends" of the sound are (where it fades out completely and I can no longer hear it). The contact is in the center.
When dealing with a convoy at distance, I use this method to discover which way the convoy is moving before I move to intercept. I head for the quiet end of the sound in the forward direction of the convoy, as it will take me some time to get there, putting me ahead of the convoy where I can wait... The "width" of the sound tells me if they are getting closer or moving away. The wider the spread, the closer the convoy/ship. I like the idea of using the training mode for learning the ranging with the hydrophone! I will give this a try later! |
![]() |
![]() |
![]() |
Thread Tools | |
Display Modes | |
|
|