correct as-is Look Down Clutter Notch Question

[almullao]

I'd include the F16, JF17 (although better) and F18, the ones I fly. I really dunno about the rest, regardless of the radar detection range, why would those radars be notched by an aircraft flying so high above ground level so easily. It's so obvious if the return signal is coming back much earlier than the ground clutter. To my knowledge, notching is done at extremely low levels in order to hide your signal within the ground clutter, not at 25k altitude.

Edited July 25, 2022 by almullao

[Spurts]

Because a Pulse Doppler radar return gets filed into two locations, Doppler Gate and Rage Gate.  If you have a PD radar mode that detects no return in the Doppler Gate then it invalidates the return.  If you are in Pulse mode there is only Range Gate.  

[almullao]

The Pulse Doppler can be confused in the case the return is close to the ground return, if the return isn't close, that signal, although within the velocity gate can be easily identified as target. Very basic processing can easily keep the target tracked, unlike when it's like within 100ft from the ground.

[TheBigTatanka]

The radar shouldn't be notched as easily as it is in DCS. Perhaps at longer ranges, where the range return is weaker and it's relying more on velocity returns.

If you read the description of the radar in the manual, it's building tracks with angular, range, and velocity information. If the contact falls into the filter for velocity, it's still tracked in range and angle. The radar goes into COAST mode and tries to resolve the velocity problem.

You can still track and engage the contact in this mode (through the notch), you just don't get velocity data so you lose the active/pitbull cues.

My reading of the manual, is that the radar shouldn't be affected by the notch unless the range returns are weak (small RCS or distant contact). There's also tools, like being able to adjust the radar gain in air to air mode so you can see smaller RCS contacts (or see them further) -- which we don't have in DCS.

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[almullao]

Makes sense, is that on known issues list?

[TEOMOOSE]

On 7/25/2022 at 6:49 PM, TheBigTatanka said:

The radar shouldn't be notched as easily as it is in DCS. Perhaps at longer ranges, where the range return is weaker and it's relying more on velocity returns.

If you read the description of the radar in the manual, it's building tracks with angular, range, and velocity information. If the contact falls into the filter for velocity, it's still tracked in range and angle. The radar goes into COAST mode and tries to resolve the velocity problem.

You can still track and engage the contact in this mode (through the notch), you just don't get velocity data so you lose the active/pitbull cues.

My reading of the manual, is that the radar shouldn't be affected by the notch unless the range returns are weak (small RCS or distant contact). There's also tools, like being able to adjust the radar gain in air to air mode so you can see smaller RCS contacts (or see them further) -- which we don't have in DCS.

Well said, Thank you !

What funny is that your post marked as the solution, and tagged correct as is.  Well, everything you have said is correct based on information, but none implemented in current Dcs World.

[BIGNEWY]

On 7/27/2022 at 1:50 AM, TEOMOOSE said:

What funny is that your post marked as the solution, and tagged correct as is.  Well, everything you have said is correct based on information, but none implemented in current Dcs World.

We did not set the post as the solution, maybe the OP did. 

[777coletrain]

Is this COAST mode planned to be added at some point?

[TEOMOOSE]

17 hours ago, BIGNEWY said:

We did not set the post as the solution, maybe the OP did. 

Very well. Im looking forward to see more updates for our Viper radar ! Thanks for all the hard work.