Chinese Missile News

[NGAD IS THE BEST]

The relevance is that you can send hundreds of these cheap satellites in near earth orbit to get better resolution and magnification

For stationary targets yes, but for fast moving targets like planes they don't give the resolution and target information to interceptors

 

[Hendarto]

For stationary targets yes, but for fast moving targets like planes they don't give the resolution and target information to interceptors

Well, I proved that Jilin 1 can track and take a video of a plane in flight . What prevents radar satellites from doing the same thing providing you have enough satellites? This article explains how Jilin is doing the trick Now Jillin's constellation is close to 230 maybe

Jilin Constellation - eoPortal

<p>Jilin-1 is China's first self-developed commercial remote sensing satellite system. The satellites are operated by Chang Guang Satellite Technology Corporation and named after Jilin Province where the company is headquartered. The first set of satellites were launched by Long March 2D in...

www.eoportal.org

Jilin Constellation​

Spacecraft Results Launches Mission Status References

Jilin-1 GXA (Guangxe-A — Optical-A) is a Chinese commercial remote sensing satellite mission, also referred to as JL-1, designed and owned by the Chang Guang Satellite Technology Co. Ltd (CGSTL) of Bejing. The development of the JL-1 constellitation began in 2015, and the first 4 satellites were launched on 7 October 2015. In 2021, there are 30 satellites in the constellation and the constellation will be expanded to 138 satellites to offer high resolution imagery and a high revisit commercial service. 1)

While the new generation of a VHR (very high resolution) microsatellite constellation is being developed by CGSTL (Chang Guang Satellite Technology Ltd.) of China, the data products are being commercialized by the HEAD Aerospace Group, a privately-owned space company with its headquarter in Beijing. Founded in 2007, HEAD has an extended presence globally including subsidiaries in Hong Kong, France, and the Netherlands.

On 15 September 2020, China successfully launched nine Jilin-1 GF-03 satellites on a Long March 11 vehicle from the China Sea, which will further increase the Earth Observation satellite portfolio commercialized by HEAD Aerospace. Jilin-1 GF-03 is part of the Jilin-1 constellation operated and developed by Chang Guang Satellite Technology Co., who is the strategic partner of HEAD Aerospace. 2)

The successful launch of the nine satellites of Jilin-1-GF-03 is part of the constellation of 54 sub-meter satellites enabling imaging anywhere on Earth every 10 minutes with observations from 10 to 16 hours. By the end of 2021, the Jilin-1 constellation expects to be composed of 60 satellites in orbit. By the end of 2025, the full constellation of 138 satellites will be in orbit, resulting in round-the-clock, all-weather, full-spectrum data acquisition, capable of providing geospatial information products and services of the highest temporal and spatial resolution globally.

 

[DevendraRajput]

The relevance is that you can send hundreds of these cheap satellites in near earth orbit to get better resolution and magnification

So?

 

[NGAD IS THE BEST]

Well, I proved that Jilin 1 can track and take a video of a plane in flight . What prevents radar satellites from doing the same thing providing you have enough satellites? This article explains how Jilin is doing the trick Now Jillin's constellation is close to 230 maybe

Jilin Constellation - eoPortal

<p>Jilin-1 is China's first self-developed commercial remote sensing satellite system. The satellites are operated by Chang Guang Satellite Technology Corporation and named after Jilin Province where the company is headquartered. The first set of satellites were launched by Long March 2D in...

www.eoportal.org

Jilin Constellation​

Spacecraft Results Launches Mission Status References

Jilin-1 GXA (Guangxe-A — Optical-A) is a Chinese commercial remote sensing satellite mission, also referred to as JL-1, designed and owned by the Chang Guang Satellite Technology Co. Ltd (CGSTL) of Bejing. The development of the JL-1 constellitation began in 2015, and the first 4 satellites were launched on 7 October 2015. In 2021, there are 30 satellites in the constellation and the constellation will be expanded to 138 satellites to offer high resolution imagery and a high revisit commercial service. 1)

While the new generation of a VHR (very high resolution) microsatellite constellation is being developed by CGSTL (Chang Guang Satellite Technology Ltd.) of China, the data products are being commercialized by the HEAD Aerospace Group, a privately-owned space company with its headquarter in Beijing. Founded in 2007, HEAD has an extended presence globally including subsidiaries in Hong Kong, France, and the Netherlands.

On 15 September 2020, China successfully launched nine Jilin-1 GF-03 satellites on a Long March 11 vehicle from the China Sea, which will further increase the Earth Observation satellite portfolio commercialized by HEAD Aerospace. Jilin-1 GF-03 is part of the Jilin-1 constellation operated and developed by Chang Guang Satellite Technology Co., who is the strategic partner of HEAD Aerospace. 2)

The successful launch of the nine satellites of Jilin-1-GF-03 is part of the constellation of 54 sub-meter satellites enabling imaging anywhere on Earth every 10 minutes with observations from 10 to 16 hours. By the end of 2021, the Jilin-1 constellation expects to be composed of 60 satellites in orbit. By the end of 2025, the full constellation of 138 satellites will be in orbit, resulting in round-the-clock, all-weather, full-spectrum data acquisition, capable of providing geospatial information products and services of the highest temporal and spatial resolution globally.

Tracking is not enough you have to give firing solutions to interceptors which these Satellites cannot gives to interceptors because they are using different bandwidths ( frequency) to fire control radars

 

[NGAD IS THE BEST]

Well, I proved that Jilin 1 can track and take a video of a plane in flight . What prevents radar satellites from doing the same thing providing you have enough satellites? This article explains how Jilin is doing the trick Now Jillin's constellation is close to 230 maybe

Jilin Constellation - eoPortal

<p>Jilin-1 is China's first self-developed commercial remote sensing satellite system. The satellites are operated by Chang Guang Satellite Technology Corporation and named after Jilin Province where the company is headquartered. The first set of satellites were launched by Long March 2D in...

www.eoportal.org

Jilin Constellation​

Spacecraft Results Launches Mission Status References

Jilin-1 GXA (Guangxe-A — Optical-A) is a Chinese commercial remote sensing satellite mission, also referred to as JL-1, designed and owned by the Chang Guang Satellite Technology Co. Ltd (CGSTL) of Bejing. The development of the JL-1 constellitation began in 2015, and the first 4 satellites were launched on 7 October 2015. In 2021, there are 30 satellites in the constellation and the constellation will be expanded to 138 satellites to offer high resolution imagery and a high revisit commercial service. 1)

While the new generation of a VHR (very high resolution) microsatellite constellation is being developed by CGSTL (Chang Guang Satellite Technology Ltd.) of China, the data products are being commercialized by the HEAD Aerospace Group, a privately-owned space company with its headquarter in Beijing. Founded in 2007, HEAD has an extended presence globally including subsidiaries in Hong Kong, France, and the Netherlands.

On 15 September 2020, China successfully launched nine Jilin-1 GF-03 satellites on a Long March 11 vehicle from the China Sea, which will further increase the Earth Observation satellite portfolio commercialized by HEAD Aerospace. Jilin-1 GF-03 is part of the Jilin-1 constellation operated and developed by Chang Guang Satellite Technology Co., who is the strategic partner of HEAD Aerospace. 2)

The successful launch of the nine satellites of Jilin-1-GF-03 is part of the constellation of 54 sub-meter satellites enabling imaging anywhere on Earth every 10 minutes with observations from 10 to 16 hours. By the end of 2021, the Jilin-1 constellation expects to be composed of 60 satellites in orbit. By the end of 2025, the full constellation of 138 satellites will be in orbit, resulting in round-the-clock, all-weather, full-spectrum data acquisition, capable of providing geospatial information products and services of the highest temporal and spatial resolution globally.

It's only possible in Chinese physics not REAL PHYSICS lol in space and in atmosphere radar waves change a lot

 

[Hendarto]

Tracking is not enough you have to give firing solutions to interceptors which these Satellites cannot gives to interceptors because they are using different bandwidths ( frequency) to fire control radars

Satellite guidance is so common do you think missile GPS-guided cruise missile works? You make it sound so complicated.
Well, the satellite's position is known all the time, all you need is to get a relative distance from the satellite. You can use laser ranging or the Doppler effect to get relative distance, Doppler radar measures the speed of the target and even direction using different satellites with different angles You can predict the path of the target Here chat gt on the position of the satellite. Well, the satellite can send the data to the ground station, AWAC, through a data link, and then they can send the data to the missile using a data link to guide the missile! Just like any SARH missile Gee!
In summary, a combination of ground-based tracking, GNSS, and innovative navigation techniques ensures that satellite positions in space are accurately known.

Certainly! The precise position of satellites in space is crucial for their proper functioning. Here are some methods used to determine satellite positions:

1. Global Navigation Satellite Systems (GNSS):
   • GNSS, such as the Global Positioning System (GPS), allows specialized radio receivers to determine their 3D space position as well as time with remarkable accuracy (ranging from 2 to 20 meters or tens of nanoseconds)1.
2. GPS Satellites:
   • For GPS to work, the orbital position (ephemeris) of the satellites must be known very precisely.
   • The GPS system relies on a network of satellites whose positions are continuously tracked and updated by ground stations. These stations calculate the ephemeris data, which includes the precise orbital parameters of each satellite.
   • GPS receivers on Earth use this ephemeris data to triangulate their own position based on signals received from multiple satellites2.
3. Pulsar-Based Navigation:
   • Engineers can calculate a spacecraft’s position in space by comparing a pulsar’s predicted pulse time of arrival with the observed pulse time of arrival.
   • Specialized onboard navigation software combines this information to determine the spacecraft’s location relative to known pulsars3.

In summary, a combination of ground-based tracking, GNSS, and innovative navigation techniques ensures that satellite positions in space are accurately known.

 

[Hendarto]

I give you the schematic how typical SARH works Now replace the ship with a satellite

 

[NGAD IS THE BEST]

Satellite guidance is so common do you think missile GPS-guided cruise missile works? You make it sound so complicated.
Well, the satellite's position is known all the time, all you need is to get a relative distance from the satellite. You can use laser ranging or the Doppler effect to get relative distance, Doppler radar measures the speed of the target and even direction using different satellites with different angles You can predict the path of the target Here chat gt on the position of the satellite. Well, the satellite can send the data to the ground station, AWAC, through a data link, and then they can send the data to the missile using a data link to guide the missile! Just like any SARH missile Gee!
In summary, a combination of ground-based tracking, GNSS, and innovative navigation techniques ensures that satellite positions in space are accurately known.

Certainly! The precise position of satellites in space is crucial for their proper functioning. Here are some methods used to determine satellite positions:

1. Global Navigation Satellite Systems (GNSS):
   • GNSS, such as the Global Positioning System (GPS), allows specialized radio receivers to determine their 3D space position as well as time with remarkable accuracy (ranging from 2 to 20 meters or tens of nanoseconds)1.
2. GPS Satellites:
   • For GPS to work, the orbital position (ephemeris) of the satellites must be known very precisely.
   • The GPS system relies on a network of satellites whose positions are continuously tracked and updated by ground stations. These stations calculate the ephemeris data, which includes the precise orbital parameters of each satellite.
   • GPS receivers on Earth use this ephemeris data to triangulate their own position based on signals received from multiple satellites2.
3. Pulsar-Based Navigation:
   • Engineers can calculate a spacecraft’s position in space by comparing a pulsar’s predicted pulse time of arrival with the observed pulse time of arrival.
   • Specialized onboard navigation software combines this information to determine the spacecraft’s location relative to known pulsars3.

In summary, a combination of ground-based tracking, GNSS, and innovative navigation techniques ensures that satellite positions in space are accurately known.

What for timing few milliseconds makes lots of difference and GPS/GNSS are not for firing solutions for fire control radars its only just for navigation purposes

 

[Hendarto]

What for timing few milliseconds makes lots of difference and GPS/GNSS are not for firing solutions for fire control radars its only just for navigation purposes

Why do you need radar? Radar is not going to reach that kind of target with a distance of 2000km? That is why you have SAR using the Doppler effect to predict the likely trajectory of the plane constantly updated with downlink and uplink just like any SARH

The Doppler effect, also known as the Doppler shift, describes changes in the frequency of any kind of sound or light wave produced by a moving source relative to an observer. Let’s explore this fascinating phenomenon:

1. Concept of the Doppler Effect:
   • When an object emitting waves (such as sound or light) moves toward an observer, the waves get compressed, resulting in a higher frequency.
   • Conversely, when the source moves away from the observer, the waves get stretched, leading to a lower frequency.
   • The effect is named after the physicist Christian Doppler, who described it in 1842.
2. Sound Waves Example:
   • Imagine a vehicle approaching you while sounding its horn. As it gets closer, the pitch of the horn appears higher.
   • At the instant the vehicle passes by, the pitch remains the same.
   • As the vehicle recedes, the pitch sounds lower.
   • This change in pitch is due to the Doppler effect.
3. Applications:
   • Meteorology: Doppler radar tracks weather phenomena by analyzing frequency shifts in radar waves reflected off raindrops or other particles.
   • Astronomy: It helps determine the motion of celestial objects (e.g., stars, galaxies) based on their spectral lines.
   • Medical Imaging: Ultrasound uses the Doppler effect to visualize blood flow.
   • Satellite Communication: Doppler shift corrections are crucial for accurate communication with satellites.

Remember, the Doppler effect provides valuable insights into motion and velocity, enhancing our understanding of the universe! 123

 

[Hendarto]

Can the doppler effect predict trajectory? YES

• Tracking Algorithms: By observing the target’s position over time, tracking algorithms can estimate its trajectory and infer changes in direction.

Certainly! Doppler radar primarily detects the radial component of velocity (i.e., motion directly toward or away from the radar). However, it does not directly determine the change in direction. Let’s explore this further:

1. Velocity Detection:
   • Doppler radar works by emitting microwave signals toward a target (e.g., raindrops, aircraft, or vehicles).
   • When the signal reflects off the moving object, its frequency changes due to the Doppler effect.
   • By analyzing this frequency shift, the radar calculates the velocity of the target along the radar’s line of sight.
   • If the target is moving toward the radar, the received frequency is higher; if moving away, the frequency is lower.
2. Direction Information:
   • Doppler radar alone cannot directly determine the change in direction because it only provides velocity information along the radar beam.
   • To infer direction changes, additional techniques are needed:
     • Tracking Algorithms: By observing the target’s position over time, tracking algorithms can estimate its trajectory and infer changes in direction.
     • Multiple Radars: Using multiple radars at different angles, the system can triangulate the target’s position and movement in 3D space.
     • Polarimetric Radar: This advanced radar type analyzes the polarization properties of the reflected signal, providing more information about the target’s shape and orientation.
     • Doppler Velocity Signatures: Certain patterns in the Doppler velocity data (such as rotation) can hint at changes in direction.

 

[NGAD IS THE BEST]

Why do you need radar? Radar is not going to reach that kind of target with a distance of 2000km? That is why you have SAR using the Doppler effect to predict the likely trajectory of the plane constantly updated with downlink and uplink just like any SARH

The Doppler effect, also known as the Doppler shift, describes changes in the frequency of any kind of sound or light wave produced by a moving source relative to an observer. Let’s explore this fascinating phenomenon:

1. Concept of the Doppler Effect:
   • When an object emitting waves (such as sound or light) moves toward an observer, the waves get compressed, resulting in a higher frequency.
   • Conversely, when the source moves away from the observer, the waves get stretched, leading to a lower frequency.
   • The effect is named after the physicist Christian Doppler, who described it in 1842.
2. Sound Waves Example:
   • Imagine a vehicle approaching you while sounding its horn. As it gets closer, the pitch of the horn appears higher.
   • At the instant the vehicle passes by, the pitch remains the same.
   • As the vehicle recedes, the pitch sounds lower.
   • This change in pitch is due to the Doppler effect.
3. Applications:
   • Meteorology: Doppler radar tracks weather phenomena by analyzing frequency shifts in radar waves reflected off raindrops or other particles.
   • Astronomy: It helps determine the motion of celestial objects (e.g., stars, galaxies) based on their spectral lines.
   • Medical Imaging: Ultrasound uses the Doppler effect to visualize blood flow.
   • Satellite Communication: Doppler shift corrections are crucial for accurate communication with satellites.

Remember, the Doppler effect provides valuable insights into motion and velocity, enhancing our understanding of the universe! 123

You don't try to understand SAR don't have bandwidth (frequency) to give the firing solutions to interceptors only X and Ku bands have a capability to give firing solutions/resolution to interceptors that's why all SAMs fire control radars works on X band, SAR works in different frequency (bandwidth) so SAR can't provide enough firing solutions/resolution to interceptors to hit the targets

 

[Hendarto]

You don't try to understand SAR don't have bandwidth (frequency) to give the firing solutions to interceptors only X and Ku bands have a capability to give firing solutions/resolution to interceptors that's why all SAMs fire control radars works on X band, SAR works in different frequency (bandwidth) so SAR can't provide enough firing solutions/resolution to interceptors to hit the targets

I GUESS YOU DON'T HAVE A CLUE THIS IS NOT RADAR IT GIVES THE POSITION OF THE TARGET IN RESPECT TO THE MISSILE USING DATA LINK! THEN THE MISSILE STEERS TOWARD THAT TARGET IT HAS NOTHING TO DO WITH RADAR! A SIMILAR CONCEPT TO SARH1 BUT INSTEAD OF X BAND OR Y BAND IT GIVES COORDINATES OF THE TARGET!

BTW MODERN SARH RADAR-GUIDED MISSILE DON'T HOME ON THE REFLECTION OF THE TARGET IT USE DOWNLINK AND UPLINK (DATA LINK) TO STEER THE MISSILE! JUST LIKE THE SCHEMATIC SAID!

 

[NGAD IS THE BEST]

I GUESS YOU DON'T HAVE A CLUE THIS IS NOT RADAR IT GIVES THE POSITION OF THE TARGET IN RESPECT TO THE MISSILE USING DATA LINK! THEN THE MISSILE STEERS TOWARD THAT TARGET IT HAS NOTHING TO DO WITH RADAR! A SIMILAR CONCEPT TO SARH1 BUT INSTEAD OF X BAND OR Y BAND IT GIVES COORDINATES OF THE TARGET!

BTW MODERN SARH RADAR-GUIDED MISSILE DON'T HOME ON THE REFLECTION OF THE TARGET IT USE DOWNLINK AND UPLINK (DATA LINK) TO STEER THE MISSILE! JUST LIKE THE SCHEMATIC SAID!

Semi active radar needs continuous tracking of the targets that satellite can't do it, only Chinese physics can do it not REAL PHYSICS can't do it

 

[Hendarto]

Semi active radar needs continuous tracking of the targets that satellite can't do it, only Chinese physics can do it not REAL PHYSICS can't do it

I GIVE UP TOO DIFFICULT FOR YOU TO UNDERSTAND!

 

[NGAD IS THE BEST]

I GIVE UP TOO DIFFICULT FOR YOU TO UNDERSTAND!

Ok China is capable to engage fighter jets 10,000 km away, now happy, now shoo, end of a discussion