Recon Altitudes and Recon Level
Posted: Thu 17 Mar 2011 1:03 pm
Are recon altitudes having an effect on the recon level in the current SEOW?
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Recon Altitudes and Recon Level
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Posted: Thu 17 Mar 2011 4:36 pm
As long as I remember, the recon details are affected by the altitude you set while plotting the mission, while the real in-game altitude does not affect the recon details (as no related info could be parsed from the eventlog).
Posted: Thu 17 Mar 2011 7:50 pm
Correct Gross. However, with HSFX5.0 a new mod makes wingtip smoke events log altitude as well as position, and the new SEOW will record the altitude for human recon photos and feed that altitude into recon calculations.
Cheers,
4Shades
Cheers,
4Shades
Posted: Fri 18 Mar 2011 3:16 am
What it the formula of reconlevel per altitude?
Posted: Fri 18 Mar 2011 9:02 am
From DCS basMissionBuilder source code
Parameter values are read from the Sector_Recon_Parameters table of the DB, e.g. things like MinReconAltitude, MaxReconGain etc etc.
Cheers,
4Shades
Code: Select all
2433 'This function calculates the reconnaissance detection radius for a given altitude.
2434 Private Function dblReconRadius(ByVal dblAltitude As Double) As Double
2435 Try
2436 dblReconRadius = Max(dblMinReconRadius, Min(dblMaxReconRadius, dblReconRadiusScale * dblAltitude))
2437 Catch ex As Exception
2438 Call basMess.MessageBox("basMissionBuilder.dblReconRadius: " _
2439 & Err.Number & " " & Err.Description, vbCritical)
2440 End Try
2441 End Function
2442
2443
2444 'This function calculates the correction to a object's recon level due to being spotted by
2445 'an enemy air reconnaissance flight. The correction depends on distance between spotter
2446 'aircraft and the object, as well as the aircraft altitude and prevailing weather conditions.
2447 Private Function getReconIncrementFromAir(ByVal dblSeparation As Double, ByVal dblReconAltitude As Double) As Integer
2448 Dim dblSeparationFactor As Double
2449 Dim dblAltitudeFactor As Double
2450 Dim dblVisibilityFactor As Double
2451 Dim dblCloudHeightFactor As Double
2452 Dim dblDaylightFactor As Double
2453 Dim intReconGain As Integer
2454 Dim intReconEstimate As Integer
2455
2456 Try
2457 'We will use a multifactorial model for the recon correction.
2458 'The separation factor declines linearly with horizontal distance, to a minimum of 0.5
2459 'at the maximum radius for this recon altitude.
2460 dblSeparationFactor = 1.0 - 0.5 * dblSeparation / dblReconRadius(dblReconAltitude)
2461
2462 'The altitude factor declines exponentially with altitude from 1 at minimum recon altitude, to a
2463 'minimum of 0.81 at the maximum recon altitude.
2464 dblAltitudeFactor = Math.Exp(-0.2 * (dblReconAltitude - dblMinReconAltitude) _
2465 / (dblMaxReconAltitude - dblMinReconAltitude))
2466
2467 'The visibility factor declines exponentially with visibility from 1 at clear conditions, to a
2468 'minimum of 0.22 in thunderstorm or rain conditions.
2469 dblVisibilityFactor = Math.Exp(-CDbl(intVisibility) / 5.0)
2470
2471 'The cloud height factor is reduced where the spotter plane is above the cloud base unless
2472 'visibility is clear.
2473 dblCloudHeightFactor = 1.0
2474 If dblReconAltitude > intCloudBase And intVisibility > 2 Then
2475 dblCloudHeightFactor = 0.75
2476 End If
2477
2478 'The daylight factor is a simple step function, only 0.3 in night hours.
2479 dblDaylightFactor = 1.0
2480 If isDaylight = False Then
2481 dblDaylightFactor = 0.3
2482 End If
2483
2484 'Here is the recon gain calculation.
2485 intReconGain = CInt(CDbl(intMaximumReconGain) * _
2486 dblSeparationFactor * _
2487 dblAltitudeFactor * _
2488 dblVisibilityFactor * _
2489 dblCloudHeightFactor * _
2490 dblDaylightFactor)
2491
2492 getReconIncrementFromAir = Math.Max(0, intReconGain)
2493
2494 Catch ex As Exception
2495 Call basMess.MessageBox("basMissionBuilder.getReconIncrementFromAir: " _
2496 & Err.Number & " " & Err.Description, vbCritical)
2497 End Try
2498
2499 End Function
2500 Cheers,
4Shades
Posted: Fri 18 Mar 2011 11:00 am
Very useful things to know Shades, thx!
Posted: Fri 18 Mar 2011 1:02 pm
Excellant analisys and coding. My compliments.
Posted: Fri 18 Mar 2011 1:34 pm
Thanks Mike for details. I will now order recon flights only high altitude (for security and reconx0.81/low altitude) and daylight (x3/night) 
Posted: Fri 18 Mar 2011 3:04 pm
Thanks for the info.
Posted: Tue 26 Mar 2013 7:02 am
For the code illiterate of us.
Can anyone tell me the correlation between altitude and recon area?
My idear is to calculate the optimum altitude for a recon pilot.
Can anyone tell me the correlation between altitude and recon area?
My idear is to calculate the optimum altitude for a recon pilot.
Posted: Tue 26 Mar 2013 7:56 am
From http://seow.cvs.sourceforge.net/viewvc/ ... iew=markup
Note that dblMinReconRadius, dblMaxReconRadius and dblReconRadiusScale are set for each sector in the DB table "Sector_Recon_Parameters".
Cheers,
4S
Code: Select all
2889 'This function calculates the reconnaissance detection radius for a given altitude.
2890 Private Function dblReconRadius(ByVal dblAltitude As Double) As Double
2891 Try
2892 dblReconRadius = Math.Max(dblMinReconRadius, Min(dblMaxReconRadius, dblReconRadiusScale * dblAltitude))
2893 Catch ex As Exception
2894 Call basMess.MessageBox("basMissionBuilder.dblReconRadius: " _
2895 & Err.Number & " " & Err.Description, vbCritical)
2896 End Try
2897 End FunctionCheers,
4S