Radar mileage

[Eagle7907]

I came across something puzzling the other day. I’m not very familiar with Tacview, but I did a test mission with the aim-54s. I shot the missiles from various distances at various targets to test the enhancements of 2.5.5. 50, 60, 70, 80nm shots. What’s surprising is viewing it on Tacview is about ten miles short of what I thought I was shooting in range to target. Is this normal for Tacview? Or is there something really wrong?

 

I’m sure I shot at those distances, because the data readout was showing it as well as the dashed 20nm scale backed up the readouts as well.

 

 

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[Eagle7907]

Radar mileage

 

Here's an example. I launch missile approximately 60 miles according to radar display. Nothing less.

 

 

 

 

As you can see here, Tacview is saying the target is less.

 

[Moafuleum]

Maybe tacview is giving you ground distance and the radar is providing slant range? Depending on the altitude difference, this could be quite significant.

 

 

 

A second thought is that the AWG-9 has some relative uncertainty in determining the distance. In this case it is about 8% which seems to be quite a lot though

[Eagle7907]

Radar mileage

 

Here's another test at 80nm? launch.

 

 

 

 

 

 

Then:

 

 

 

Edited June 11, 2019 by Eagle7907

[MysteriousHonza]

closing speed is kinda high and it takes about 3-5 seconds after pressing trigger to feed AIM54 with all needed data and lauch, so if you are shooting at fast closing target at 60nm, in reality, you are shooting at +- 55nm

[Eagle7907]

closing speed is kinda high and it takes about 3-5 seconds after pressing trigger to feed AIM54 with all needed data and lauch, so if you are shooting at fast closing target at 60nm, in reality, you are shooting at +- 55nm

 

 

 

Umm, I don't think so. The picture is taken right after I heard the release of the missile (countdown on TID), but before the sound of hearing the turbulence from the missile. Both pictures are from the same exact moment in time. Last I checked this isn't the space shuttle.

 

 

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