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Add range rings and fixed mile to nm

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This commit is contained in:
Mark Allyn
2026-05-22 09:25:51 -07:00
parent ffe27191f4
commit f1330c6b81
1 changed files with 52 additions and 12 deletions
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64
CLAUDE.md
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@@ -341,7 +341,7 @@ Individual scope informations
All source signals are combined in a single hardware mixing matrix before driving the electrostatic plates:
* **Receiver Chain:** The atmospheric background noise floor (grass) and the target echo pulses are combined
first, and are directly scaled by the operator's Receiver Sensitivity control.
* **Calibration Chain:** The crystal-controlled 20-mile reference pips are injected into the video chain
* **Calibration Chain:** The crystal-controlled 20-nm reference pips are injected into the video chain
AFTER the primary receiver gain stage. As a result, modifications to the Sensitivity control do not scale
the vertical height of calibration pips.
@@ -352,7 +352,7 @@ Individual scope informations
// Map values downwards from structural baseline ceiling
float final_y = baseline_y - total_deflection;
If an operational target echo shares an identical range slot with a 20-mile calibration pip, their respective
If an operational target echo shares an identical range slot with a 20-nm calibration pip, their respective
voltages additively sum, dynamically pushing the peak tip further toward the bottom layout limit.
==========================================================================
@@ -386,7 +386,7 @@ Individual scope informations
null points for each target. Since we do not have a physical calibrated knob, we
can put the bearing as a text indicator below the A Scope.
The range is 200 miles. That is the only range option for this scope.
The range is 200 nm. That is the only range option for this scope.
RADAR EQUATION STUFF FOR CHAIN HOME
@@ -416,8 +416,8 @@ Individual scope informations
float resonance = (target.length >= wavelength * 0.4 && target.length <= wavelength * 0.6) ? 1.5 : 1.0;
float final_sigma = base_sigma * resonance;
The 20-Mile Markers: Chain Home used crystal-controlled oscillators to create
fixed reference "pips" every 20 miles. These should be rendered as thin,
The 20-nm Markers: Chain Home used crystal-controlled oscillators to create
fixed reference "pips" every 20 nm. These should be rendered as thin,
vertical spikes that never move, regardless of target sensitivity.
The "Floodlight" Effect: Because the beam is 150° wide, the A-Scope will
@@ -472,10 +472,10 @@ Individual scope informations
float final_y = baseline_y + total_deflection;
The maximum ranges for this scope are:
1. 1.5 miles; marker pips every 0.25 miles
2. 3.0 miles; marker pips every 0.5 miles
3. 6.0 miles; marker pips every 1.0 miles
4. 12.0 miles; marker pips every 2.0 miles
1. 1.5 nm; marker pips every 0.25 nm
2. 3.0 nm; marker pips every 0.5 nm
3. 6.0 nm; marker pips every 1.0 nm
4. 12.0 nm; marker pips every 2.0 nm
RADAR EQUATION FOR MARINE A SCOPE
@@ -619,13 +619,13 @@ Individual scope informations
-------------------------------------------------------------------
// The selected_range is from the operator control to select the maximum range of the radar
// Options for traffic control are:
The selected_range is from the operator control to select the maximum range of the radar
Options for traffic control are:
1.5 nm range
6 nm range
12 nm range
// Options for boat radar are:
Options for boat radar are:
1.0 nm range
3 nm range
6 nm range
@@ -722,6 +722,46 @@ PPI Radar Equiation
The numeric degree values are between the outer and inner rings.
The innter ring is the boundry for active targets and the sweep.
=======================================================================
Range Rings:
There shall be range rings (Direct emission from the phosphor, same
as target. They will vary by the maximum range setting.
Range rings shall be only for the PPI radar. Not for the a scope radar.
For the Marine Traffic Radar:
Options for traffic control are:
1.5 nm range rings
.5 nm
1.0 nm
6 nm range
2.0 nm
4.0 nm
12 nm range
4.0 nm
8.0 nm
Options for boat radar are:
1.0 nm range
.5 nm
3 nm range
1 nm
2 nm
6 nm range
2 nm
4 nm
PLease note that there is no range ring for the full range as that is
the inner ring of the graticule
Please also note that the range rings will behave the same as targets as
far as the P7 phosphor is concerned. This means that they will glow brigh
as the sweep passes over them. But they will decay the same as the targets.
The range rings will not be subject to effects by the gain control nor
the noise suppression control
=======================================================================