http://www.survivalebooks.com/free%2...%20%20408p.pdf
If you want to study the original equipment then read the above manual. It is from 1945 and covers A and PPI.
You are being entrusted
with vital military secret when
you learn about radar.

It is
imperative that you keep what
you learn about the operation,
performance and functions of
all radar a secret. Stop and
consider what radar does for
you in guarding your hip and in
protecting your life and the
lives of your shipmates. This
miracle weapon is largely on
our side. That is where it will
remain if security functions
properly. KEEP WHAT YOU
LEARN TO YOURSELF!

^^^^^^^
I love that part in the manual.
The A and PPI are not modeled 100% accurately. The blips are round instead of elongated but what they have done is give you a frame of reference in your attacks and range to target. On the real set you can tell smaller targets from larger ones by the size of the blips. The scope on the boat does this but you have to look exceptionally close because the size difference is not as great as on the real scope.
Your sonar is offset because your sonar man continues to allows it to turn so your losing time between bearings plus movement of your own boat and target. As stated above you need to send information yourself and the more the better.
I would suggest digging around a finding some mods to add to your game. Many mods will help with realism. While no mod or group of mods will give you a 100% realistic aspect to the game they do enhance the program and far exceed the stock game in playability and realism.
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Generic Mod Enabler - v2.6.0.157
1_TriggerMaru_Overhaul_2-5
1_TMO_25_small_patch
RSRDC_TMO_V502
RSRDC_V5xx_Patch1
Traveller Mod v2.6 TMO
#1 Real Environment mod install
Traveller Mod 2.6 Patch 1 - ISE v3 Patch
#4 Warships retextured
Traveller Mod 2.6 No Midway Transfer
Traveller Mod 2.6 No DC Camera Shake
Traveller Mod 2.6 Larger Search Patterns
Traveller Mod 2.6 Harder Enemy AI Escorts
Traveller Mod 2.6 Automatic Ship ID
Traveller Alternate Main Loading Screens
Convoy Routes TMO+RSRD
tambor198's TMO+RSRDC missions pack
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