China Ballistic Missiles and Nuclear Arms Thread
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Hendrik_2000
Lieutenant General
Any doubt that China that cannot track or find CBG in pacific should be dispelled with this video
I mean this civilian satellite imagine the military version
Satellites from the Chinese constellation Jilin-1 recently demonstrated the ability to identify and then track in real time video planes at Hartsfield-Jackson International Airport in Atlanta, United States.
I mean this civilian satellite imagine the military version
Satellites from the Chinese constellation Jilin-1 recently demonstrated the ability to identify and then track in real time video planes at Hartsfield-Jackson International Airport in Atlanta, United States.
NORAD ID: 43946
Int'l Code: 2019-005E
Perigee: 522.9 km
Apogee: 550.5 km
Inclination: 97.5 °
Period: 95.2 minutes
This satellite have 2-3 minutes time window to observe any given spot on the surface before fly over it.
If there are 20 of these then they have on average 3 minutes window in every three hour to observe a spot on the surface.
Hendrik_2000
Lieutenant General
But you forgot that China has 300 dual use satellite to find the cbg and You only need to focus on the carrier for the last leg of the missile 3 minute is more than enough. And I don't know how you get 3 minute for 20 satellite because before satellite fly passed the target it will send signal to the next satellite to watch over the same target Indian think tank who is expert in Satellite observation conclude China has persistent surveillance over pacific! And you are not expert!
Monitoring over time
With regard to following a vessel previously identified over time, in order to be able to locate it at regular intervals, the passes should ideally be distributed at regular intervals during the day. This is not the case, and it can therefore take up to 4:40 am between two successive passes (YG10 and YG18 in the evening). This is enough for a ship to travel 250 km at 30 knots, and therefore if it has changed course, it is probably out of the field of view of the satellite charged with following it.
In addition, since SAR satellites fly relatively low, they have only one chance in two of passing sufficiently over a given vessel to be able to image it. A fast ship which maneuvers often therefore has a good chance of regularly escaping the constellation's surveillance, forcing it to return to a search phase.
However, around 10:00 a.m. and 1:30 p.m. local time, JB-9 satellite pair passes provide a vessel's position, course, and speed (if the first satellite was successful in finding the vessel, the second can find it. and thus calculate its average speed), and confirm its identification. This provides a solid trail that could serve as a firing solution for fast missiles like the , or more conventional missiles launched from a ship or aircraft already placed close to the target.
Conclusion
China has a triple radar, optical and electronic capability of detecting, identifying and tracking ships at sea. Even without taking into account the capability of real-time tracking from geostationary orbit, the large optical constellation field JB9 and the SAR constellations JB-5 and JB-7 make it possible to scan a large area every day to find contacts of interest, and to have a good chance of refreshing the leads of the most interesting contacts every few hours, even for ships without electromagnetic emissions. Consequently, it seems unlikely that an opposing naval group will be able to hide for long in the ocean.
However, in the event of very significant cloud cover, only SAR satellites can be used, which can severely limit the identification and monitoring capabilities of the system. This does not mean that China is blind: other means of detection, such as , or quite simply its can complete the satellite system, and thus seriously question the invulnerability of American aircraft carriers at sea. The intervention of the United States to intervene in a new Taiwan crisis would therefore be much more risky, and suddenly much less probable.
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-sight- basic math.
Orbital characteristic :
Perigee: 522.9 km - minimum altitude of satellite
Apogee: 550.5 km- maximum altitude of satellite
Period: 95.2 minutes - take this long to make a full turn around the earth , but of course the globe will turn under the satellite during this time.- there always only one rotation vector for an object, reason why the quaternions usable for satellite navigation software.
I add that the equator is 40 000 km long.
I think it is easy to see the problem .
Hendrik_2000
Lieutenant General
BS read here you imposter full of BS you think China only has one satellite. What basic math I am license engineer all you have given is 92.5 minute per cycle so what it got to do with 3 minute observation time ?
Conclusion
China has a triple radar, optical and electronic capability of detecting, identifying and tracking ships at sea. Even without taking into account the capability of real-time tracking from geostationary orbit, the large optical constellation field JB9 and the SAR constellations JB-5 and JB-7 make it possible to scan a large area every day to find contacts of interest, and to have a good chance of refreshing the leads of the most interesting contacts every few hours, even for ships without electromagnetic emissions. Consequently, it seems unlikely that an opposing naval group will be able to hide for long in the ocean.
However, in the event of very significant cloud cover, only SAR satellites can be used, which can severely limit the identification and monitoring capabilities of the system. This does not mean that China is blind: other means of detection, such as , or quite simply its can complete the satellite system, and thus seriously question the invulnerability of American aircraft carriers at sea. The intervention of the United States to intervene in a new Taiwan crisis would therefore be much more risky, and suddenly much less probable.
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Good, if you passed your math exams then it is easy to to calculate the visibility of a point on earth from the sky for satellite observation. It is just high school math.
You jump and mix statements :
1. capability to monitor/analyse the surface of earth from satellites doesn't means it is possible to continuously monitor - the analysis linked by you saying the same
2. It needs continuous monitoring to detect and attach ships.
Just an interesting point, the RORSAT satellites was in pairs, followed each other.
There was only two satellites, the first detected the target, the second 25 minutes later gave the final targeting data to the P-700 missiles flying toward the position identified by the search satellite..
So, the Soviet system used two satellite to find and target USA ships, of course it means the system from the attack command needed no more than 24 hours to find the target.
Hendrik_2000
Lieutenant General
So you assumed that China only have 1 satellite you need to check with a doctor man. And you didn't prove anything as usual with your BS
Don't know why people are overhyping the Chinese observation satellite constellation when the Chinese would be the first to admit its not complete. Even if you can permanently observe areas of interest, there is no evidence that the ability analyzing such images and having the infrastructure to send and utilize the information in real time is at all well developed yet. The ability to use satellites for terminal guidance for ballistic missiles is also not proven, though if they had this capability I doubt they'd be advertising it. I think its likely that the missiles have alternative methods of terminal guidance regardless.
I don't think it is easy, can you show your math?
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