Jump to content

nighthawk2174

Members
  • Posts

    1482
  • Joined

  • Last visited

About nighthawk2174

  • Birthday 03/11/1999

Personal Information

  • Flight Simulators
    BMS, DCS
  • Location
    USA

Recent Profile Visitors

11059 profile views
  1. The APG-68 also has sidelobe guard horns to suppress the sidelobe clutter as well. Is that even considered in this model?
  2. Yeah and this is just how feedback loops can work in general. I fully agree with your inital post as the target would not have to compete against clutter and would stick out. So when the speed and range gates are run through the return spectrum they should just grab the target. Lookdown would be harder but still possible for MPRF, HPRF would rely entirely on S/N being high enough.
  3. I think this also applies to ATGM's which is a big issue for the apache.
  4. The spparow's also home in on doppler, they track using a speedgate. This should provide good resistance against chaff considering how quickly they loose speed.
  5. Yeah this is what English bias commands are for, from the AIM-7E autopilot diagram I have the english bias commands are applied at the moment of wing unlock which occurs even before seeker lock on. It seems like that's not happening here super odd. Almost as if their reversed???
  6. Never heard of it having hprf, it’s a mprf radar. It does have a lprf mode.
  7. Note that the Jeff has HPRF which has better detection range.
  8. The issue here is that in MPRF when you feed the returns into the associated apparent range bins then feed that into the attached doppler bins a good portion of that clutter will fall into another doppler bin whereas the target will be in one range bin. This will reduce the amount of energy that the target return has to compete against to whatever happens to fall into the same doppler bin. The MLC is not all at the same doppler as the target and the larger the look angle and the larger the velocity of the missile the more that energy is distributed. Were in STT not search as well, currently it seems that the notch is 100kts'ish hopefully you can give the exact number. But In STT your tracking gates are going to be much much smaller then this. Typical values I see referenced are 15m/s in total width. And the missile should really only loose the tracking gate if the target is not competing with clutter. But that would mean that you could get a lot closer to the central MLC return (especially at close range and for high RCS say being side on or given your belly to the target) without loosing track. If not right on it if the noise is low such as in only very low look angles or low return clutter like calm seas. Also we can't ignore factors like integration time and PDI for S/N.
  9. Yeah seems this is part of the notch behavior discussed before: my thoughts on the matter are layed out in this thread.
  10. I'd seen some documents reference two different nose cons for the 7F one that is better for the sensor and one better for aero performance i'd just never seen the difference. Do we know which one was in more common use? edit: Didn't the 7M get another redesigned nose again from the 7F? From just one quick image grab it seems that it's closer in shape to the older but more aerodynamic nose cone:
  11. There will be at some point it will be able to go active on its own. Currently the only benefit is better chaff resistance.
  12. The AIM-120 has an INS so by default its going to know the targets location in 3D space. You could easily look for a split S based off of this information. We know from documentation that there is a method by which there are adjustments made to compensate for the split-S on the AIM-7. I highly doubt the amraam would not have something similar if not even better.
  13. According to razbam's galinette DCS was only returning a constant value for the RCS even when side on. I linked him to your post and I think he said he was going to talk to you. Are you sure this is implemented?
  14. Yeah i'm still a little fuzzy on this but don't rage bins come before the Doppler filters?
×
×
  • Create New...