ZeroReady Posted February 5, 2020 Posted February 5, 2020 Above the ddd there are range buttons. If i am in pulse doppler mode, the drum readout below those buttons is blank. pressing one gives no feedback, and the pulse doppler mode doesn't show range. ok fine. so if i get some contacts and i want to iff in PD search, if i press one of those range buttons, then iff, that range shows up on the readout as long as im iff-ing. does that mean that the iff radar is only reaching out to that selected range? I know that while iff-ing in PD mode, the ddd changes from showing closure rate to range. Im trying to understand what those range buttons do in iff mode. And another thing. If we're just out looking for a fight, I'm in PD Search. Now I get some contacts, determine they are closing on us. Should I immediately go into RWS, or TWS at that point? Which one? Why choose RWS over TWS? Thank you!
QuiGon Posted February 5, 2020 Posted February 5, 2020 (edited) Above the ddd there are range buttons. If i am in pulse doppler mode, the drum readout below those buttons is blank. pressing one gives no feedback, and the pulse doppler mode doesn't show range. ok fine. so if i get some contacts and i want to iff in PD search, if i press one of those range buttons, then iff, that range shows up on the readout as long as im iff-ing. does that mean that the iff radar is only reaching out to that selected range? I know that while iff-ing in PD mode, the ddd changes from showing closure rate to range. Im trying to understand what those range buttons do in iff mode. Those range buttons do the same for the DDD as the range knob does for the TID. It sets the display range, so it does not affect radar range, but the range display on your DDD. That only applies though, if you're in a radar mode that shows range on the DDD. Radar modes that show range on the DDD are all pulse modes and the IFF mode. If you're in a radar mode that shows closure instead, then those buttons are of no relevance and the range readout will go blank. This is the case for all PD modes. And another thing. If we're just out looking for a fight, I'm in PD Search. Now I get some contacts, determine they are closing on us. Should I immediately go into RWS, or TWS at that point? Which one? Why choose RWS over TWS? To be honest, I don't really use PD search. Its range bonus over RWS is not needed most of the time, unless you're really flying a Fleet Defense type of mission where you need to detect the incoming bombers at the absolute maximum range. For the vast majority of situations the range of RWS is more than enough, so I rather use RWS instead of PD-S, as it gives you better SA on the TID. Now for RWS vs TWS: RWS gives some important advantages over TWS, as it allows a much bigger scan volume (TWS is limited to 40° 2 bars or 20° 4 bars) and also has a bigger range than TWS. I only use TWS if I either want to launch a Phoenix or if I really need a track file on the TID to see precisely what the contact is doing. So I spent most of my time in RWS mode. Edited February 5, 2020 by QuiGon Intel i7-12700K @ 8x5GHz+4x3.8GHz + 32 GB DDR5 RAM + Nvidia Geforce RTX 2080 (8 GB VRAM) + M.2 SSD + Windows 10 64Bit DCS Panavia Tornado (IDS) really needs to be a thing!
ZeroReady Posted February 5, 2020 Author Posted February 5, 2020 Excellent thank you that all makes sense. I was confused weather the buttons changed the range the radar goes out to or like you said just the display range. I get it now. So if I am in RWS, and I get contacts on the DDD, I can infer their range on the TID by using the lines and spaces going out from my position right? So if I know they're 60 miles out, should I click the 100 mile range button before I IFF so it will show them on the ddd when I interrogate? Even though Im in PD, when I'm holding down the IFF button closure changes to range on the DDD? Like if I have 5 selected when I IFF, will I not see those contacts when I hold the button?
QuiGon Posted February 5, 2020 Posted February 5, 2020 So if I am in RWS, and I get contacts on the DDD, I can infer their range on the TID by using the lines and spaces going out from my position right? Exactly. Also, if you're using TWS you can even hook the contacts on the TID to get a precise range readout (among other readouts like altitude, speed, heading). So if I know they're 60 miles out, should I click the 100 mile range button before I IFF so it will show them on the ddd when I interrogate? Even though Im in PD, when I'm holding down the IFF button closure changes to range on the DDD? Like if I have 5 selected when I IFF, will I not see those contacts when I hold the button? Exactly, you got it! :thumbup: Intel i7-12700K @ 8x5GHz+4x3.8GHz + 32 GB DDR5 RAM + Nvidia Geforce RTX 2080 (8 GB VRAM) + M.2 SSD + Windows 10 64Bit DCS Panavia Tornado (IDS) really needs to be a thing!
Naquaii Posted February 5, 2020 Posted February 5, 2020 Those range buttons do the same for the DDD as the range knob does for the TID. It sets the display range, so it does not affect radar range, but the range display on your DDD. That only applies though, if you're in a radar mode that shows range on the DDD. Radar modes that show range on the DDD are all pulse modes and the IFF mode. If you're in a radar mode that shows closure instead, then those buttons are of no relevance and the range readout will go blank. This is the case for all PD modes. Correct, apart from that IRL it does actually affect radar range as well. A LPRF pulse radar will change the PRF according to set range to maximise target detection probability. Being a LPRF radar mode it has to wait for the radar energy to return to the receiver until it can transmit, this is what limits the PRF. So when you set a shorter range the radar will increase the PRF as the returns will be back quicker, allowing the PRF to go higher. Higher PRF means more energy in target and a higher detection probability. Atm this isn't modelled but is something that might be added eventually.
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