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by78

by78

General
I don't know where to put this, since we don't have a dedicated thread on naval air defense missiles, so here will have to do.

Below is an excerpt from an academic paper that talks about a tri-mode (microwave + infrared+ radar) seeker. This might well have to do with the HQ-10, which is widely used as a point air defense system on naval ships. I had always thought the HQ-10 has a dual-mode seeker, but it might have a tri-mode seeker instead.

Corrections on translation errors are welcome.

主动毫米波雷达导引头采用弹载相控阵技术，其相控阵天线扫描速度快、扫描范围大、 抗电子干扰能力强、指向精度高，又没有机械随动系统，体积小、重量轻，适于弹上使用; 红外成像导 引头采用红外凝视焦平面成像技术。为了缩小导引头的体积，考虑兼容性，在结构上红外探测器与毫米波天线采用共口径的卡寒格伦光学系统/相控阵天线复合系统。

... ...

1红外凝视成像导引头
2复合头罩
3被动微波导引头夭线(相位干涉仪）
4主动毫米波导引头相控阵天线5复合导引头信号处理部分
Click to expand...
The active millimeter-wave radar seeker adopts phased array technology. It's compact, light weight, and has fast scanning speed, large scanning range, strong jamming resistance, and high guidance accuracy. The imaging infrared seeker adopts focal-plane array technology. In order to reduce seeker size, both the infrared detector and the millimeter-wave antenna use a common-aperture composite Cassegrain optical/phased array antenna system.

... ...

1 Imaging infrared seeker
2 Composite shroud
3 Passive microwave antenna (phase interferometer)
4 Active millimeter-wave phased array seeker
5 Signal processor
Click to expand...


52564082822_9eae870cf3_b.jpg
52565073128_3dd6f9aeb3_k.jpg
 
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Blitzo

Blitzo

Lieutenant General
Staff member
Super Moderator
Registered Member
by78 said:
I don't know where to put this, since we don't have a dedicated thread on naval air defense missiles, so here will have to do.

Below is an excerpt from an academic paper that talks about a tri-mode (microwave + infrared+ radar) seeker. This might well have to do with the HQ-10, which is widely used as a point air defense system on naval ships. I had always thought the HQ-10 has a dual-mode seeker, but it might have a tri-mode seeker instead.

Corrections on translation errors are welcome.





52564082822_9eae870cf3_b.jpg
52565073128_3dd6f9aeb3_k.jpg
Click to expand...

Interesting

Do you know when the paper was published?

Personally I admit I'm a little skeptical as to the idea that this could be for HQ-10.

Multimode SAMs and AAMs is definitely a trend, but HQ-10 seems too small for such a complex seeker -- not only imaging infrared with radar, but an AESA seeker at that!

But if it was present on a BVRAAM or a larger SAM, it would be very reasonable.
 
by78

by78

General
Blitzo said:
Interesting

Do you know when the paper was published?

Personally I admit I'm a little skeptical as to the idea that this could be for HQ-10.

Multimode SAMs and AAMs is definitely a trend, but HQ-10 seems too small for such a complex seeker -- not only imaging infrared with radar, but an AESA seeker at that!

But if it was present on a BVRAAM or a larger SAM, it would be very reasonable.
Click to expand...

Unfortunately, I have no information other than what's in the image. The only reason HQ-10 came to my mind was due to the seeker's superficial visual similarity to that of the HQ-10 and nothing more, so your skepticism is definitely warranted.
 
H

hundredyears

New Member
Registered Member
by78 said:
Unfortunately, I have no information other than what's in the image. The only reason HQ-10 came to my mind was due to the seeker's superficial visual similarity to that of the HQ-10 and nothing more, so your skepticism is definitely warranted.
Click to expand...
Unfortunately, this brief 2004 paper (copy as
Please, Log in or Register to view URLs content!
) may have little to do with actual applications in developing weaponry. It seems to be more of a general exploratory/review piece on existing literature for potential benefits in advanced missile guidance involving tri-mode seekers. The diagram used is likely just notional.

There is also a more recent 2021 paper (2nd file
Please, Log in or Register to view URLs content!
) going over similar discussions for tri-mode guidance at greater technical depths, and by authors with considerably higher authority --- first author LU Fugang is a resident researcher at Xi'an Modern Control Technology Research Institute (aka NORINCO
Please, Log in or Register to view URLs content!
, one of the principal state institutions in developing precision guided munitions and weapon guidance systems in general), whom also apparently serves (or at least served) as "chief scientist" at NORINCO.
1671144195614.png

The concluding remark in the 2nd paper mentions its research verifies the feasibility of a "certain multi-mode seeking system" “plan/program". This would likely help to confirm PLA has an ongoing tri-mode seeker program under active development, but it doesn't seem to indicate PLA already has an existing system that offers such capability.



For anyone's interest, here also is a listing of published articles by authors affiliated with the said Institute 203 during past several years:
1671146951352.png
1671146970059.png

Let me know if any triggers interest, I can probably help save some legworks in finding copies.
 
H

hundredyears

New Member
Registered Member
It seems if one spends too much time writing a post, the system may not save edits made after a certain point in time when the user finally decides to post it.

Missing a short paragraph after "offers such capability" and before "For one's interest":
"And postulating from how the paper still seems to hold practical feasibility concerns over fusing three separate modes, and has focus on theoretical designs and simulation analysis, it may suggest the research cycle for the whole domain (ie. tri-mode seekers in all applications) is yet to enter advanced stages of development, assuming there isn't significant intentional delays in the publishing of the article (which can certainly be likely)."
 
A

ACuriousPLAFan

Colonel
Registered Member
hundredyears said:
It seems if one spends too much time writing a post, the system may not save edits made after a certain point in time when the user finally decides to post it.
Click to expand...
Since you're a newcomer, it's fine.

Once you click "psot reply" on the bottom right corner, you would be allocated 20 minutes to edit your post or replace the whole post with the word "delete" if you wish for your post to be deleted by the moderators later. Only moderators can delete posts by themselves.

Once the 20 minute-mark has been reached, your post would be permanently locked, and no attempts at editing and asking for delete of post can be done.
 
Last edited:
by78

by78

General
hundredyears said:
Unfortunately, this brief 2004 paper (copy as
Please, Log in or Register to view URLs content!
) may have little to do with actual applications in developing weaponry. It seems to be more of a general exploratory/review piece on existing literature for potential benefits in advanced missile guidance involving tri-mode seekers. The diagram used is likely just notional.

There is also a more recent 2021 paper (2nd file
Please, Log in or Register to view URLs content!
) going over similar discussions for tri-mode guidance at greater technical depths, and by authors with considerably higher authority --- first author LU Fugang is a resident researcher at Xi'an Modern Control Technology Research Institute (aka NORINCO
Please, Log in or Register to view URLs content!
, one of the principal state institutions in developing precision guided munitions and weapon guidance systems in general), whom also apparently serves (or at least served) as "chief scientist" at NORINCO.
View attachment 103475

The concluding remark in the 2nd paper mentions its research verifies the feasibility of a "certain multi-mode seeking system" “plan/program". This would likely help to confirm PLA has an ongoing tri-mode seeker program under active development, but it doesn't seem to indicate PLA already has an existing system that offers such capability.



For anyone's interest, here also is a listing of published articles by authors affiliated with the said Institute 203 during past several years:
View attachment 103476
View attachment 103477

Let me know if any triggers interest, I can probably help save some legworks in finding copies.
Click to expand...

Excellent. Thank you!
 
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