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Post by sage on Dec 10, 2021 6:04:57 GMT
I'm trying to find out what each of the guidance law do for each of the three phases of flight.
The three Phase are
Boost phase
Midcourse Phase
Terminal Phase
Does and one know the rules that tell me which phase the missile or drone is in?
The Guidance laws are
Unguided
Pure Pursuit
Deviated Pursuit
Proportional Navigation
Augmented Proportional Navigation
The name alone tells me what unguided does. But how do the other effect the missile or drone? And how do they effect the missile or drone during each phase?
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Post by dundun92 on Dec 10, 2021 19:30:46 GMT
Pure pursuit points the missile directly at the target, does not try to lead or anything.
Deviated pursuit is pure pursuit, but instead of pointing right at the target it leads by some fixed amount X degrees.
Proportional Navigation (aka PN) leads the target by keeping the Line-of-sight (LOS) rate at zero. The idea here is that if 2 objects are on a collision course, there is no movement of the LOS vector, instead they merely get closer and appear to get bigger (RL analogy: if you are in car and see another car that is stationary on the windshield and getting closer, it is on a collision course).
APN is PN, but it has an extra term in the equation to adjust for target acceleration. For atmospheric AAMs, APN helps in energy retention, and often results in more favorable end game intercept geometry against maneuvering targets.
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Post by sage on Dec 12, 2021 1:43:34 GMT
Pure pursuit points the missile directly at the target, does not try to lead or anything. Deviated pursuit is pure pursuit, but instead of pointing right at the target it leads by some fixed amount X degrees. Proportional Navigation (aka PN) leads the target by keeping the Line-of-sight (LOS) rate at zero. The idea here is that if 2 objects are on a collision course, there is no movement of the LOS vector, instead they merely get closer and appear to get bigger (RL analogy: if you are in car and see another car that is stationary on the windshield and getting closer, it is on a collision course). APN is PN, but it has an extra term in the equation to adjust for target acceleration. For atmospheric AAMs, APN helps in energy retention, and often results in more favorable end game intercept geometry against maneuvering targets. For Deviated pursuit do you know how much of a lead there is in the game? I don't remember a setting when I selected that option. |
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Post by dundun92 on Dec 13, 2021 20:10:53 GMT
Pure pursuit points the missile directly at the target, does not try to lead or anything. Deviated pursuit is pure pursuit, but instead of pointing right at the target it leads by some fixed amount X degrees. Proportional Navigation (aka PN) leads the target by keeping the Line-of-sight (LOS) rate at zero. The idea here is that if 2 objects are on a collision course, there is no movement of the LOS vector, instead they merely get closer and appear to get bigger (RL analogy: if you are in car and see another car that is stationary on the windshield and getting closer, it is on a collision course). APN is PN, but it has an extra term in the equation to adjust for target acceleration. For atmospheric AAMs, APN helps in energy retention, and often results in more favorable end game intercept geometry against maneuvering targets. For Deviated pursuit do you know how much of a lead there is in the game? I don't remember a setting when I selected that option. No, I dont unfortunately. |
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Post by sage on Dec 16, 2021 23:19:42 GMT
Pure pursuit points the missile directly at the target, does not try to lead or anything. Deviated pursuit is pure pursuit, but instead of pointing right at the target it leads by some fixed amount X degrees. Proportional Navigation (aka PN) leads the target by keeping the Line-of-sight (LOS) rate at zero. The idea here is that if 2 objects are on a collision course, there is no movement of the LOS vector, instead they merely get closer and appear to get bigger (RL analogy: if you are in car and see another car that is stationary on the windshield and getting closer, it is on a collision course). APN is PN, but it has an extra term in the equation to adjust for target acceleration. For atmospheric AAMs, APN helps in energy retention, and often results in more favorable end game intercept geometry against maneuvering targets. Ok, so is there a reason to use anything but APN? Also, what about Damping Engine Multiplier? What does it mean when it said that it will "blended out" the guidance law with pure pursuit? Why would we ever want to blend out the guidance law. |
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Post by linkxsc on Jan 5, 2022 17:22:17 GMT
>Ok, so is there a reason to use anything but APN?
In game, not much, unless you have a missile that's behaving oddly on APN (sometimes the game oversteers maneuverable missiles). If you're willing to do the micromanaging, 1 thing you CAN get out of building several "similar" missiles, with different guidance laws... is that after they enter combat in a swarm, APNs PNs and PPs will spread themselves out a bit as they approach the target. This can alleviate problems such as... enemy point defense lasers, guns, or interceptor missiles, striking 1 of your missiles, and neutralizing the whole swarm due to a chain reaction.
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Echo
Full Member
Posts: 141
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Post by Echo on Jan 7, 2022 21:01:13 GMT
Here's the missile construction and tuning guide. It mentions only a few of the guidance laws. I don't remember where or why they did it, but I've read of some people using Proportional Navigation during the terminal phase. |
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Post by sage on Jan 7, 2022 22:33:47 GMT
Here's the missile construction and tuning guide. It mentions only a few of the guidance laws. I don't remember where or why they did it, but I've read of some people using Proportional Navigation during the terminal phase. Do you know what CoaDE version we are on? |
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Echo
Full Member
Posts: 141
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Post by Echo on Jan 18, 2022 19:36:28 GMT
1.2.1.3, as per crashlog.
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