Desi G3OM Makes BrahMos Smarter

[Gessler]

You can't ask for a better bulls-eye than this, coming from 290km range -

 

[Mr.S.Singh]

Poor reporting by Indian express !!

Advanced version of BrahMos supersonic cruise missile test-fired successfully

BALASORE (ODISHA): India today succcessfully test-fired an advanced version of the 290-km range Brahmos supersonic cruise missile off the coast of Odisha, giving the country the capability to hit enemy targets hidden behind mountains or in a cluster of buildings with "pinpoint accuracy".

The missile travelled its full strike range of 290 kms in about 500 seconds to hit its simulated target in a copybook fashion after being fired from the Integrated Test Range at Chandipur-on-sea, around 15 kms from here, BrahMos chief A Sivathanu Pillai told PTI.

Dwelling on the increased accuracy of the missile, he said, "The advanced guidance system integrating multiple navigation satellites including the Gagan system powered with new software algorithm and developed indigenously by Indian scientists and industries, resulted in pinpoint accuracy of the missile system against hidden land targets in mountain warfare."

BrahMos and DRDO officials involved in the test-firing at the launch block had said earlier the missile could deviate around 10 metres from its target but the new system would reduce it to less than 5 metres which will make it highly effective against targets such as hardened concrete bunkers in mountain warfare.

The missile was test-fired from a mobile launcher at 10.38 AM, Defence Research and Development Organisation (DRDO) said. It is capable of carrying a conventional warhead of 300 kgs.

"It was a developmental trial of BrahMos," Ravi Kumar Gupta, senior defence scientist and Director, Directorate of Public Interface, DRDO, said.

The two-stage missile, the first one being solid and the second one ramjet liquid propellant, has already been inducted into the Army and Navy, and the Air Force version is in final stages of trial, a defence official said. Work on the submarine-launched version of the system is also in progress.

This was the 44th test-firing of the missile, said BrahMos, a joint venture firm of India and Russia.

The system is now fully operational with two regiments of the Army. It is expected to form part of a third regiment of the Army -- the 17 Mountain Strike Corps being raised for deployment along the China border, which mostly comprises mountainous regions from Ladakh to the Northeastern region.

The officials at the launch site said the capability of the missile can be of major use for the Navy once it starts using BrahMos for land attack roles.

Advanced version of BrahMos supersonic cruise missile test-fired successfully - Economic Times

It talks about mid-fight deviation under 5m not target !

 

[Gessler]

I'm saying, the supposition that a missile can be solely relied upon sat navigation is misleading.

No one is relying solely on satnav for course guidance. All missiles we have can use multiple-redundancies, infact
G3OM itself gives Triple-redundancy for satnav as in it uses GPS, GLONASS, GAGAN & in future IRNSS, each signal is
received in it's own unique amplitude & frequency. Jamming them all at the same time is a difficult thing unless you
have mobile wideband jammers in large numbers.

On top of that, RLG-INS & DSMAC are already present on BrahMos for course guidance and a SAR seeker for
terminal guidance.

Case in point, there is simply no denying it that G3OM significantly increases a missile's accuracy, and therefore lethality. It is
way better than your father's single-channel GPS receiver any day of the week.

LOL below five accuracy for a cruise missile is just poor. Even that Quasi Tactical Missile Nasr has less then 3.1 meters.

Sure, except that Nasr doesn't hit within 3.1 meters of the target, but it's the target which
is painted within 3.1 meters of Nasr hit location and then fed to all the great drone-stricken
peoples to provide with mental masturbation material for a few months.

But then again, BrahMos has like 300 km range while Nasr is just 60km.

Ye akalmandi ki baatain na kia karo jani, indians ko samajh nai aatin.

Tu hai na humko samjane kiliye...filhal bada madrassa mein padayi kiye te aap log. Hum tho bas chote chote
IITs mein padte hai...

 

[Bratva]

No one is relying solely on satnav for course guidance. All missiles we have can use multiple-redundancies, infact
G3OM itself gives Triple-redundancy for satnav as in it uses GPS, GLONASS, GAGAN & in future IRNSS, each signal is
received in it's own unique amplitude & frequency. Jamming them all at the same time is a difficult thing unless you
have mobile wideband jammers in large numbers.

On top of that, RLG-INS & DSMAC are already present on BrahMos for course guidance and a SAR seeker for
terminal guidance.

Case in point, there is simply no denying it that G3OM significantly increases a missile's accuracy, and therefore lethality. It is
way better than your father's single-channel GPS receiver any day of the week.

I know a person who uses GIS Surveying equipment which uses GPS/GLONASS/BEIDOU. I was with him one day when he was surveying an area near airport, His equipment wasn't able to receive signal from either of GPS/GLONASS/BEIDOU. He said whenever an airplane approaches, radar waves interfere with it's equipment signals and jam all signals from all sat.

GO3OM will mostly utilize civilian signals of GPS and GLONASS, it is not hard to jam them despite them in different frequency band.

Russian jammers are good example of how they can jam signal up to 200 KM


I was replying to post of Hari who was saying seeker is useless when missile can solely be guided with Sat Nav. Only INS based navigation would degrade accuracy significantly

 

[Gessler]

I know a person who uses GIS Surveying equipment which uses GPS/GLONASS/BEIDOU. I was with him one day when he was surveying an area near airport, His equipment wasn't able to receive signal from either of GPS/GLONASS/BEIDOU. He said whenever an airplane approaches, radar waves interfere with it's equipment signals and jam all signals from all sat.

GO3OM will mostly utilize civilian signals of GPS and GLONASS, it is not hard to jam them despite them in different frequency band.

Russian jammers are good example of how they can jam signal out of 200 KM

Civilian signals are never heavily encrypted, Plus their accuracy is always considerably lower than the military-specific
signals. We have clearance for military-grade GLONASS, however the most accurate one (in this neighbourhood) would
be IRNSS when that becomes available in 1-2 years.

 

[Bratva]

Civilian signals are never heavily encrypted, Plus their accuracy is always considerably lower than the military-specific
signals. We have clearance for military-grade GLONASS, however the most accurate one (in this neighbourhood) would
be IRNSS when that becomes available in 1-2 years.

Encryption refers to, content attached with GPS signal couldn't be retrieved, not that Signal can not be jammed. Military grade or civilian grade, both GPS signals when come to earth are greatly attenuated ( Greater the frequency, higher the attenuation of signal passing through atmosphere, and Sat signals works in GHZ frequency. A similar example is of MMW radar, that's why it has such a low range and can't be utilized in fighter jets due to it's high frequency) and have low strength. Hence can easily be jammed

 

[MilSpec]

That knowledge needs to be updated.
The Chinese have been peddling a GPS/GLONASS/Beidou system for a few years now in the low key markets.

my cellphone has gps and glonass...

I can certainly see why the word nano has so much relevance.
Still, a smaller system does not have to have nano in its marketing ploy.
A more relevant area of research before a GPS guided "nano" missile would be a MMW seeker for the Nag missile.

It's the other way around usually ... I think article was aimed to create curiosity about gagan

 

[Gessler]

Encryption refers to, content attached with GPS signal couldn't be retrieved, not that Signal can not be jammed. Military grade or civilian grade, both GPS signals when come to earth are greatly attenuated ( Greater the frequency, higher the attenuation of signal passing through atmosphere, and Sat signals works in GHZ frequency. A similar example is of MMW radar, that's why it has such a low range and can't be utilized in fighter jets due to it's high frequency) and have low strength. Hence can easily be jammed

...and that's why multiple receivers with multiple signals are used, to up the redundancy in such cases. But then again,
satnav isn't the only thing that is guiding BrahMos. Thing is, compare BrahMos w/ G3OM to some other similar
missile with a single or double-redundant satnav equipment, and you'll know you've got the more accurate one.

EDIT : And with IRNSS, we can apply relevant corrections to the deviated signal as and
when we want.

 

[Alfa-Fighter]

Encryption refers to, content attached with GPS signal couldn't be retrieved, not that Signal can not be jammed. Military grade or civilian grade, both GPS signals when come to earth are greatly attenuated ( Greater the frequency, higher the attenuation of signal passing through atmosphere, and Sat signals works in GHZ frequency. A similar example is of MMW radar, that's why it has such a low range and can't be utilized in fighter jets due to it's high frequency) and have low strength. Hence can easily be jammed

Military (M-code)
A major component of the modernization process is a new military signal. Called the Military code, or M-code, it was designed to further improve the anti-jamming and secure access of the military GPS signals.

Very little has been published about this new, restricted code. It contains a PRN code of unknown length transmitted at 5.115 MHz. Unlike the P(Y)-code, the M-code is designed to be autonomous, meaning that a user can calculate their position using only the M-code signal. From the P(Y)-code's original design, users had to first lock onto the C/A code and then transfer the lock to the P(Y)-code. Later, direct-acquisition techniques were developed that allowed some users to operate autonomously with the P(Y)-code.

 

[ni8mare]

No one is relying solely on satnav for course guidance. All missiles we have can use multiple-redundancies, infact
G3OM itself gives Triple-redundancy for satnav as in it uses GPS, GLONASS, GAGAN & in future IRNSS, each signal is
received in it's own unique amplitude & frequency. Jamming them all at the same time is a difficult thing unless you
have mobile wideband jammers in large numbers.

On top of that, RLG-INS & DSMAC are already present on BrahMos for course guidance and a SAR seeker for
terminal guidance.

Case in point, there is simply no denying it that G3OM significantly increases a missile's accuracy, and therefore lethality. It is
way better than your father's single-channel GPS receiver any day of the week.



Sure, except that Nasr doesn't hit within 3.1 meters of the target, but it's the target which
is painted within 3.1 meters of Nasr hit location and then fed to all the great drone-stricken
peoples to provide with mental masturbation material for a few months.

But then again, BrahMos has like 300 km range while Nasr is just 60km.



Tu hai na humko samjane kiliye...filhal bada madrassa mein padayi kiye te aap log. Hum tho bas chote chote
IITs mein padte hai...

which iit ?

 

[Gessler]

Military (M-code)
A major component of the modernization process is a new military signal. Called the Military code, or M-code, it was designed to further improve the anti-jamming and secure access of the military GPS signals.

Very little has been published about this new, restricted code. It contains a PRN code of unknown length transmitted at 5.115 MHz. Unlike the P(Y)-code, the M-code is designed to be autonomous, meaning that a user can calculate their position using only the M-code signal. From the P(Y)-code's original design, users had to first lock onto the C/A code and then transfer the lock to the P(Y)-code. Later, direct-acquisition techniques were developed that allowed some users to operate autonomously with the P(Y)-code.

An ex-IN Harrier pilot in another forum once told that IRNSS includes a similar, though less sophisticated, automonous
mode & position data correction features on the military GSs.

 

[Bratva]

Military (M-code)
A major component of the modernization process is a new military signal. Called the Military code, or M-code, it was designed to further improve the anti-jamming and secure access of the military GPS signals.

Very little has been published about this new, restricted code. It contains a PRN code of unknown length transmitted at 5.115 MHz. Unlike the P(Y)-code, the M-code is designed to be autonomous, meaning that a user can calculate their position using only the M-code signal. From the P(Y)-code's original design, users had to first lock onto the C/A code and then transfer the lock to the P(Y)-code. Later, direct-acquisition techniques were developed that allowed some users to operate autonomously with the P(Y)-code.

How do you think Iranian landed American drone who were using GPS encoded with M-code?

...and that's why multiple receivers with multiple signals are used, to up the redundancy in such cases. But then again,
satnav isn't the only thing that is guiding BrahMos. Thing is, compare BrahMos w/ G3OM to some other similar
missile with a single or double-redundant satnav equipment, and you'll know you've got the more accurate one.

EDIT : And with IRNSS, we can apply relevant corrections to the deviated signal as and
when we want.

Most anti-jam devices currently in use are either "nulling" or "beamforming systems," explained Kelly. These two technologies refer to exploit techniques that can be used to counter jamming signals. Some GPS receivers have an antenna array, with up to seven receiving elements arrayed in a geometric pattern. Upon detection of jamming interference, part of the antenna pattern can be turned down, so the noise from that particular direction does not interfere with the rest of the system. That is called nulling the signal.

"A null means that I will not look in the direction in space that the jammer is coming from," Kelly said. The electronics protect the receiver by eliminating the interference signal. One problem with this nulling technique, however, is that "as you eliminate jammers, you eliminate your ability to receive signals from the GPS satellites," he said. "You could have a nulling system that kills off the jammers, but you no longer have enough satellites available for you to navigate."

The beamformer, meanwhile, "doesn't care where the jammers are." The beamformer selects and receives signals from at least four satellites and provides four anti-jam solutions. "The beamformer algorithm is more aggressive and you get a better result," Kelly said. Recent simulations conducted by Telephonics, he said, showed that beamformers performed better than nullers.

But these systems cannot be used with older GPS receivers. Because a beamformer produces four outputs directed at four selected satellites, it cannot interface with a standard GPS receiver that only has one input. "You need a receiver that is customized to accommodate the beamformer interface," said Kelly.

New missiles typically feature a tight package composed of an anti-jam device, antenna and GPS receiver. This makes them more adaptable for beamforming anti-jammers, Kelly asserted.

"The missile community wants anti-jam products that are small, low powered, and low cost," Kelly said. His company plans to compete in the market for GPS anti-jam products for missiles. Most recently, Telephonics lost the competition for an anti-jam system for the U.S. joint air-to-surface standoff missile (JASSM), currently in development by Lockheed Martin Missiles and Fire Control, based in Orlando, Fla.


Threat to Satellite Signals Fuels Demand for Anti-Jam Products

 

[SQ8]

India has exclusive military level access to GLONASS signals , Chinese have only civilian level access to both GPS and Glonass.....


well if you have information , it able to meet requirement of May/june/july heat condition unto 2/3 Kms instead of 4. Improvement is underway to meet 4 km .

Which is why they have Beidou, all the access they want. India having military level access has little effect or rather.. who cares ..as far as the Chinese are concerned.

 

[SR-91]

What do you intend to do with Nano missiles? Kill bacteria?

When the prefix nano is used, it usually implies length in nanometers.

Any system or SUB-system.

But thank u for ur remarks.
And by the way, we dont need DRDO or any defence co, but our Pharmaceuticals companies have plenty nano-missiles for bacteria.

 

[SQ8]

Any system or SUB-system.

But thank u for ur remarks.
And by the way, we dont need DRDO or any defence co, but our Pharmaceuticals companies have plenty nano-missiles for bacteria.