My-Analogous
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Oh good ! So not a substandard rip-off.
Yes we saw lot of INDIAN high standard products like kavari engine, Arjun Tank etc.
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Oh good ! So not a substandard rip-off.
Am waiting for the 'Chinese physics' practitioners to take the lead on this one. I have posted plenty on basic principles that cleared up a lot of confusion on a lot of technical issues but have yet to see such a lead based upon 'Chinese physics'.so, what are those white circle things are for and their displacements?
EM absorbers.and what are absorbers
?
photo taken at CASIC
Le 19 Juin, un article apparu dans le journal de l'aérospatial chinois nous donne quelques détails sur l'un des 3 instruments du système d'amarrage chinois - le radar micro-ondes.
Développé par l'Institut de recherche n°25 du groupe CASIC, le chef de projet est un docteur qui est diplômé en France. Le radar pèse 12 kg et sa portée théorique est de 160km.
Lors de la mission Shenzhou-8, ce radar a démontré sa grande précision et la fiabilité, et a détecté TG-1 à 217km de distance.
Cette fois-ci dans la mission Shenzhou-9, ce radar continue à prouver sa performance. Le 18 Juin à 9h33, peu après l'activation de ce radar micro-ondes sur Shenzhou-9, il a détecté sa cible, TG-1, à une distance de 224km. 11h47, le vaisseau Shenzhou-9 se rapproche de TG-1 et passe en navigation autonome, les données envoyées par ce radar sont toujours stables. 12h41, au point de stationnement de 5km, le radar continu à fonctionner correctement avant de passer la main au radar de laser et aux capteurs CCD.
Quelques photos de cette jeune équipe de recherche...
google translate:
On June 19, an article appeared in the Journal of the Chinese aerospace gives us some details on one of three instruments of Chinese mooring system - radar microwave.
Developed by the Research Institute No. 25 CASIC Group, the project manager is a doctor who graduated in France. The radar weighs 12 kg and its theoretical range is 160km.
During the Shenzhou-8, this radar has demonstrated its high accuracy and reliability, and TG-1 was detected at 217km distance.
This time in the Shenzhou-9, the radar continues to demonstrate its performance. On June 18 at 9:33, shortly after the activation of this radar microwaves on Shenzhou-9, it detected the target, TG-1, a distance of 224km. 11:47, the Shenzhou-9 is similar to TG-1 and switches to autonomous navigation, the data sent by the radar are always stable. 12:41, to the point of parking 5km, radar continued to function properly before going out to the radar laser and CCD sensors.
Some photos of this young research team ...
You mean here...???ok, i found the original source of thr photo. it was posted by some frenchie guy at astronautique forum.
Antenna edge diffraction effects are usually not an issue -- UNLESS there are multiple antennas in an array. Keep in mind that an antenna is not an array even though the two are often casually used interchangeably, even by professionals in the field. An array is a collection of discrete antennas that are supposed to work in concert with each other for some reasons.Author(s): Zhi Xu
Radar & Avionics Inst. of AVIC, Wuxi, China
Xuequan Yan ; Zhenghe Feng ; Shuxi Gong ; Qizhong Liu
Diffraction effects of the edge region within the antenna array aperture have been discussed with the numerical simulation and measurement in the antenna array monostatic Radar Cross Section (RCS) analysis.
You mean here...???
[Mission] Shenzhou-9 & TG-1 - Page 16
It is supposedly a radar designed to assist in spacecraft docking.
CASIC Microwave Docking Radar ,the Technological Breakthrough behind Precision Docking
But am going even more basic than usage. What make the mating of two large bodies, in space or on Earth, so difficult that it would require the assistance of microwave sensors? That is what I was trying to get at. There are rectangular openings on the centers of those discs that looks very much like waveguide openings.
As for what I suspected to be EM absorbers surrounding those 'discs'...
IEEE Xplore - Abstract Page
Antenna edge diffraction effects are usually not an issue -- UNLESS there are multiple antennas in an array. Keep in mind that an antenna is not an array even though the two are often casually used interchangeably, even by professionals in the field. An array is a collection of discrete antennas that are supposed to work in concert with each other for some reasons.
So now there are further clues, let us see how fares the 'Chinese physics' experts at guessing what next, although given their absence so far, we should not have much hope at their contribution. The Chinese engineers in the photos undoubtedly works with real physics.
But am going even more basic than usage. What make the mating of two large bodies, in space or on Earth, so difficult that it would require the assistance of microwave sensors? That is what I was trying to get at. There are rectangular openings on the centers of those discs that looks very much like waveguide openings.
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Yes we saw lot of INDIAN high standard products like kavari engine, Arjun Tank etc.