From f1330c6b81ad21d16ac71eabd048b8a3e47e3abd Mon Sep 17 00:00:00 2001 From: Mark Allyn Date: Fri, 22 May 2026 09:25:51 -0700 Subject: [PATCH] Add range rings and fixed mile to nm --- CLAUDE.md | 64 ++++++++++++++++++++++++++++++++++++++++++++----------- 1 file changed, 52 insertions(+), 12 deletions(-) diff --git a/CLAUDE.md b/CLAUDE.md index 926f723..fb1b803 100644 --- a/CLAUDE.md +++ b/CLAUDE.md @@ -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 =======================================================================