A-A Missiles doubts.
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I’d rather hear the answer to wether or not the target missile who will home in on the jammer will continue to track via radar while the jammer is running……
Yeah, anyone knowledgeable would be appreciated on this topic - is the HOJ spec of the missile a redundancy guidance (complementing the radar) or a main form of guidance at times?
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How come that the radar can’t know where the target is exactly but the missile know where it is while jammer is on?
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Because the ECM is an emitter that you can home on. It does not need any reflections like the radar needs to have.
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The radar does know where it is, but the jammer is stronger than the emmisions of the radar at that point. It’s a radio signal that’s getting bounced back to the reciever; far away it is really weak and the jammer can play tricks on the reciever. The closer you get the less effective the jammer is because more of the radar signal is being returned since more is hitting the target. Eventually the radar reaches the point where it recieves more strength from its own returns than the jammer can, or it burns thru the jammer. I’m not an expert but what I’m guessing is going on is that the jammer is sending on a couple different frequencies hoping that your radar system can’t fully lock on target.
Anybody recall Direction Finding for radio signals? You point the antenna in the correct direction and you pick up more signal than other directions. You then have two options - move this way or that. One direction will pull you away from the signal source, the other will move you towards it. The missile with the homing feature is spotting the signal from the jammer and knows which way to turn to get closer. Eventually it finds the source or it runs out of steam to reach the source.
Your radar is set to a specific frequency, the jammer sends bad signals back to it to lie about position. But the missile with the homing option can see all the radio energy and it acts like an ir missile, with the jammer as a shot at a target in afterburner from dead 6.
Somebody correct me where I went wrong please, but does that make any sence?
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How come that the radar can’t know where the target is exactly but the missile know where it is while jammer is on?
It’s called HOJ - Home On Jam
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Would it be somewhat similar to having a playing radio? As in, even though you can’t see the radio, you can hear where the sound is coming from and head in that direction until you find it?
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from what I understand, your radar is capable to give you a direction to the target in manner of angle up/down/left/right, but it can’t give you a range, vector or velocity of the target. Your fcr and ar msl don’t know in which zone the target is and if they can reach it with a missile, but they know at least as you do, in which direction they have to move, and if they come in closer, they can burn through.
It might happen also that the target is to far away so you can’t see it yet with your radar purely, but with the ecm you saw him. you send an missile with home on jamming. while the radar was able to track the target because of its ecm, it would not see anything anymore if target turns ecm off but is still to far away. now your missile cant home on the jammer, and doesn’t see anything. now it is a slammer or hounddog (don’t know the exact definition, will take a look on it).
that’s how I understand it.
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…if target turns ecm off but is still to far away. now your missile cant home on the jammer, and doesn’t see anything.
I’m not sure that’s correct. If the target turns its jammer off after he missile has been tracking him in HOJ mode, the missile is going to come out of HOJ mode and switch to radar tracking mode.
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@mookar:
I’m not sure that’s correct. If the target turns its jammer off after he missile has been tracking him in HOJ mode, the missile is going to come out of HOJ mode and switch to radar tracking mode.
jeah, but if the missile is still not close enough to find the target with its own radar, it will become a maddog (that’s also the word I meant in my previous post).
What I don’t get is HOJ in principle. From what I understood, it really is a maddog with HOJ capability. But if there would be for example two jamming targets close together, you won’t be able to say which jamming ac you’d like to select as target.
Do I understand something wrong? Can you actively select, which jamming thing you want to attack? -
jeah, but if the missile is still not close enough to find the target with its own radar, it will become a maddog…
If the missile is that far as to not pick the target up with its own radar then it’s going to receive target and maneuvering data from the launching platform, in a nominal situation it should not go maddog. Of course there are ‘snip’ instances due to various circumstances but that’s another thing.
What I don’t get is HOJ in principle. From what I understood, it really is a maddog with HOJ capability.
The way I understand it is if you ‘snip’ before ‘pitbul’ the missile is going to try and detect jamming radiation and home in on the emitter.