Radar Units Reference

Radar units extracted from all mission .miz files using Lua table parsing (DCS mission table loaded via loadfile()).

Version: 1.0 — corrected from v0.3 which used regex parsing and incorrectly produced fictional group names.

Radar Types Observed Across Missions

Important: KDO_Mod40 is a fire-control radar for heavy Flak, not an EWR site. The script filters radar types at line 716.

Summary

All missions use theatre="Normandy" (N1 map). This is the original Normandy map, not the Normandy 2 remake.

EWRS Coverage Analysis

The EWRS.lua script retrieves radar groups by calling Group.getByName() against the hardcoded names in ewrs.blueRadarsByName and ewrs.redRadarsByName. Any radar unit whose group name is not in those lists is invisible to the script.

EWRS Configured Group Names

Which Missions Contain Each Configured Name?

Key findings: 1. Freya 1 never appears in any mission. It exists in EWRS.lua config but is never instantiated in .miz files. Group.getByName("Freya 1") always returns nil. 2. RT2 Radars only exists in Mission 01. 3. Allied RADAR ENG is absent from only Mission 05. 4. Allied RADAR Beaches only appears in Mission 05 (introduced late-campaign) and then disappears — it does NOT persist across all missions as previous analysis claimed.

EWRS Script Logic

-- EWRS.lua (lines 55-64)
ewrs.blueRadarsByName = {
    "Allied RADAR ENG",
    "Allied RADAR Beaches",
    "RT2 Radars",
}

ewrs.redRadarsByName = {
    "FREYA",
    "Freya 1",
}

-- EWRS.lua (lines 715-731)
local function scanSide(list, targetTable)
    for i = 1, #list do
        local group = Group.getByName(list[i])
        if group then
            local units = Group.getUnits(group)
            for j = 1, #units do
                -- unit is added to targetTable for processing
            end
        end
    end
end

scanSide(ewrs.blueRadarsByName, blueUnits)
scanSide(ewrs.redRadarsByName, redUnits)

Important Observations

- Axis BT1 Radars (3x FuSe-65/FuMG-401)

- St. Vaast Coastwatcher-1 (3x FuMG-401 + FuSe-65)

- Static Freya shelters (Static Freya Shelter Brick-1, Static Freya Shelter Concrete-2/3)

Bottom Line

EWRS.lua is using a hardcoded whitelist of radar group names. The actual radar counts across missions are much higher than shown in v0.3 analysis. Mission 01 has 62 radar total (not 37); missions 02–12 have 37–48 total, but the majority are KDO_Mod40 Flak fire-control radars, not EWR sites.

The true EWRS-configured radar count is relatively low — typically 5–12 units per mission. The only group names that need to be tracked by EWRS are Allied RADAR ENG, Allied RADAR Beaches, RT2 Radars, and FREYA. Freya 1 is dead config.

EWRS Detection Technical Analysis

(This section retained from v0.3 — the script logic is accurate.)

Scanning Ranges

EWRS.lua delegates detection to DCS's built-in AI sensor API (Controller.Detection.RADAR), then applies a post-filter for earth curvature / radar horizon.

-- EWRS.lua (lines 684-685)
local ewrControl = ewrUnit:getController()
local detectedTargets = ewrControl:getDetectedTargets(Controller.Detection.RADAR)

The script then filters contacts below the radar horizon:

-- EWRS.lua (lines 697-700)
if Alt > ((6371000 * (1 - mathCos(0.000157 * RangeKm))) - 5) then
    tableInsert(units, v)
end

Key implications:

* Effective max range is determined by the radar unit type in the mission editor.

* The script only trims contacts geometrically below the radar horizon.

* Low-altitude contacts can still be detected within ~4–20 km depending on radar height and target altitude.

Terrain Masking / Line of Sight

Radar detection is already terrain-masked by the DCS AI sensor model. The script adds a second LOS check for the player-facing display loop (displayMessageToAll):

-- EWRS.lua (lines 553-567)
local radarList = (Side == 1) and ewrs.redEwrUnits or ewrs.blueEwrUnits
if #radarList > 0 then
    for r = 1, #radarList do
        local radarUnit = UnitGetByName(radarList[r])
        if radarUnit then
            local RadarPoint = radarUnit:getPoint()
            RadarPoint.y = RadarPoint.y + 4
            if land.isVisible(PlayerPoint, RadarPoint) then
                isLOS = true
                break
            end
        end
    end
end

Coalition Limits

Radar scanning is strictly separated by coalition:

Blue radars detect red contacts; red radars detect blue contacts. No cross-coalition sharing.

Radar Coverage Logic (Picture Reports)

After detection, contacts are sorted into 23 named polygon zones. Only the top ewrs.NoOfPictures zones (default 2) are printed in the player's picture report.

Key implications:

* Zone membership is determined purely by the contact's (x, z) position.

* Contacts outside all 23 zones are silently discarded from picture reports.

* Because zones are large geographic areas, a zone can show "8 plus bandits" even if the detecting radars are 100 km away.

Changelog

1.0 (2026-04-30)