DRDO, PSU and Private Defence Sector News

[charlie]

@porky_kicker we don't have unified SDR for 3 forces so how mwf will connect with other forces platforms according to brochure.

It depends upon the waveforms the radio support for example take a look at the photo below, you can’t just program a waveform as most people understand a SDR can “A little tweak as most people think will not help”. It’s has to be integrated by the manufacturer for example the below photo shows the radio does not support p25 phase II as it has not been integrated yet.


Have quick II, trellisware and sincgars are mostly used by planes so it’s actually depend on the radio

The below photo is from the best radio in the world, at least 5 to 7 years ahead then their competitors.

 

[charlie]

I m not porki kicker but in my knowledge.

You will never be able to interface to the radio environment without some hardware. At the bare minimum you'd need an antenna and an amplifier.

The "software-defined" in "software-defined radio" means that the hardware is minimal and most of the system configuration, algorithms, and processing that define the radio are done in software.So the Unification is in software you can replace the current communications with SDR and can tune into each Weapons need in software.

I m not porki kicker but in my knowledge.

You will never be able to interface to the radio environment without some hardware. At the bare minimum you'd need an antenna and an amplifier.

The "software-defined" in "software-defined radio" means that the hardware is minimal and most of the system configuration, algorithms, and processing that define the radio are done in software.So the Unification is in software you can replace the current communications with SDR and can tune into each Weapons need in software.

I think you are thinking about Ham radio in mind, In military environment radios works in a ad hoc environment, the handheld connects to a man pack and the man pack selects the best route forward

I have never seen an amplifier or antenna change in a mobile multi band radio it has dual antenna, a man pack has multiple antennas depending on which route the man pack or the operator selects, once a radio is installed into a tank or heli we only remove it if there is some defect otherwise it’s stays on we don’t change amplifier or antennas as per the mission requirements and if it needs a waveform upgrade a flash code update or firmware update will not do the job it has to be sent back to the manufacturer office (we are talking about money here, not a charity).

When a single band is upgraded to multi band then a add on hardware is required. Don’t go for advertisements. In military it works differently because portable is designed with something different in mind. I can go on and on about it but some other time.

Now there are shore to ship communication that are completely a different beast in that you can select how many amplifier you want to make a transmission you can break and rebuilt the whole circuit, I never worked on that system but heard few things about it. I think that is more strategic communication. I only have some experience in tactical level.

 

[Karthi]

ABHED-1 A Hardware based Encryption Device.


Abhed-1 is a dedicated secure hardware-based offline encryption device for transacting classified data over Public / Open Data networks.

The purpose of the device is to undertake folder and file level encryption with data files read from source USB media device and written to a different target USB media device.

The hardware-based device is to encrypt, decrypt and handle common Windows/ Linux file system over USB on either end.

The Secure hardware will enable our armed forces to have offline security with their own systems in place. With this hardware implementation the Graded secure data handled with self driven algorithms will be faster, simple and secure.

 

[fire starter]

It depends upon the waveforms the radio support for example take a look at the photo below, you can’t just program a waveform as most people understand a SDR can “A little tweak as most people think will not help”. It’s has to be integrated by the manufacturer for example the below photo shows the radio does not support p25 phase II as it has not been integrated yet.


Have quick II, trellisware and sincgars are mostly used by planes so it’s actually depend on the radio

The below photo is from the best radio in the world, at least 5 to 7 years ahead then their competitors.
View attachment 44402

so which is better SDR or link 16 . also what do u want to say about sdr developed by drdo.

 

[Karthi]

Bharat Forge Crankshaft. Crankshaft is one of the most important parts of a ships engine.

 

[charlie]

so which is better SDR or link 16 . also what do u want to say about sdr developed by drdo.

SDR can have link 16 and a lot more, depends on manufacturer, a link 16 module can be connected to SDR as well there can be so many scenarios.

DRDO needs to come up with its own waveforms for India why do we have to depend on foreign standards?

 

[Karthi]

Czech republic developed passive radar /ESM system .

Has a range of 450 Km . Claims to detect B2 stealth bomber at 250 Km.


Previous version of this system VERA E exported to Pakistan, US, Malaysia etc please note Pakistan .

Uses a technique called time on arrival

VERA-NG antenna after deployment .

 

[Karthi]

A single VERA-NG ground station ready for deployement on a lightweight mobile tetrapod.

 

[Karthi]

VERA-NG analysis and observation stations.

 

[Karthi]

Six VERA E was cleared for export to China in 2004 .

Benefits

Covert operations “see without being seen” non-emitting capability


Allows for “good neighbor” status while still being vigilant


Provides long term ELINT information

Difficulty of jamming

Resistivity to anti-radiation missiles

Lower acquisition, operations, and maintenance costs (versus conventional radars)


No need for frequency allocations

 

[Karthi]

Rigel A111 from Indian startup.


Rigel-A111 is an indigenously designed and developed multi constellation rugged Global Navigation Satellite System (GNSS)
receiver capable of taking all current & future GNSS signals including GPS,
GLONASS, BEIDOU, NavIC, QZSS and SBAS. It is software upgradable to track upcoming signals as they become available and to provide customer
performance required for user application. In addition, Rigel-A111 when integrated with stable clocks can function as GNSS desciplined clock source.


Rigel-A111 is designed for rugged/medium dynamic applications without compromising on its ergonomics. Rigel A111 carries proven hardware

/software architecture to withstand rigorous environmental requirements.

 

[Karthi]

NDU is an indigenously developed rugged IRNSS, GPS, GLONASS & GAGAN receiver
with navigation display. This product provides excellent performance in terms of sensitivity and TTFF.


The NDU power supply design is robust enough to handle the vehicle supply variations.It can operate from 8V up to 32V and provide protection against surges, short circuit and reverse power supply connection.

 

[Karthi]

Two-way Satellite Time and Frequency Transfer.

Applications

Synchronization of one station clock to a remote Master station clock at nanosecond accuracy via a satellite link

Comparison of a station clock reference to a remote station Clock reference for time keeping purpose

 

[Karthi]

Prototype of In-Vessel Inspection System(IVIS) for SST 1 fusion experimental reactor . this system helpful in visual inspection of reactors inside Under High Vacuum UHV and high temperature conditions .

 

[Chinmoy]

Because of atmospheric drag + distance between earth & tungsten launcher at time of release of rods. --- those rods won't have enough velocity & kinetic energy to cause such huge damage. --- I read somewhere that to creat Megaton size impact you need to have those launcher orbiting Jupiter.

Problem is, if we release a 1 kg mass body from LEO, its impact velocity would be equivalent to anywhere in between Mach 70 to Mach 150 depending on the angle of entry and keeping all variables constant. Even the RVs of BM under gravity does have impact velocity of Mach 25+ with an entry angle of 45 degree.

The report you were quoting, was a study carried out USAF and it was found that if the body was not controlled during its free fall, the damage would be devastating enough to gain any meaningful purpose. So the idea was to keep the impact velocity at 7500mph or Mach 10 for it to be a practical solution.

As of today, with hypersonic projectile and Railgun, this Mach 10 hit could be achieved at a much lower price then Project Thor. So in today's world, if someone is to deploy such a costly weapon, they would not cut down the impact velocity to Mach 10.

 

[Karthi]

PoLo-S100 developed by private Indian company .

(IRNSS/GPS/GLONASS/GALILEO/BEIDOU/GAGAN)

PoLo-S100 is an indigenously designed and developed multi Constellation Global Navigation Satellite System (GNSS) receiver capable of receiving signals
including IRNSS, GPS, GLONASS, GALILEO, BEIDOU and GAGAN . PoLo-S100 accompanies with a rugged antenna
capable of receiving signals in L1, L5 and S bands.

 

[Karthi]

Rugged GNSS Receiver

Rugged GNSS Receiver is a GPS,GLONASS, GAGAN receiver designed and built for aerospace and defense applications .


Features

GPS GAGAN GLONASS receiver with indigenous technology

Differential Corrections as per RTCM SC 104

Isolated serial interface ports

Built in Test.


NMEA 3.01 Output messages


MTBF of more than 20000 hours as per MIL-217-HDBK

 

[Karthi]

Problem is, if we release a 1 kg mass body from LEO, its impact velocity would be equivalent to anywhere in between Mach 70 to Mach 150 depending on the angle of entry and keeping all variables constant. Even the RVs of BM under gravity does have impact velocity of Mach 25+ with an entry angle of 45 degree.

The report you were quoting, was a study carried out USAF and it was found that if the body was not controlled during its free fall, the damage would be devastating enough to gain any meaningful purpose. So the idea was to keep the impact velocity at 7500mph or Mach 10 for it to be a practical solution.

As of today, with hypersonic projectile and Railgun, this Mach 10 hit could be achieved at a much lower price then Project Thor. So in today's world, if someone is to deploy such a costly weapon, they would not cut down the impact velocity to Mach 10.

You Forget Terminal velocity, Accelerating to 70 M is little bit difficult more over the accuracy of These systems are low in atmosphere even wind can affect these projectiles A change in 1mm may lead to a change of many meters or Km

 

[Karthi]

Indian company Acculytics developed blast resistant Smart material which can be used in Armoured vehicles Buildings etc .it has been tested for 100 Kg TNT . Pic not available

The same company developed self healing fuel sealent . this mil grade self healing seal can use to protect vehicles from bullets . When bullets hit the fuel tank the upon penetration the coating reacts with the fuel closes the leak within microseconds .

 

[fire starter]

Instant Fire Detection & Suppression System for MBT Arjun.

Instant Fire Detection and Suppression System (IFDSS) is a micro controller based fire detection and suppression system for vehicle/Tanks. The Equipment automatically detects the fire and suppression of fire is carried out either automatic or pressing manual override switch in crew as well as in engine compartment of the tank.

The detector unit have IR sensors and detects the fire in crew compartment and send the confirmation signal of fire to Main Control Unit (MCU) over Control Area Network protocol. The Main Control Unit (MCU) takes the necessary action to activate the fire Extinguishers.

A “Fire-Wire” is a flexible heat detecting wire, having one or more elements joined in series by means of various connector accessories. It is simply a linear Thermal Detector, which is directly interfaced with the Main Control Unit. It’s logic is designed for detection “Over Heat”, “Fire”, “Open Circuit” and “Short Circuit” conditions.

The system has feature of continuous health monitoring of Detector Units, Alarm and Flasher unit, Fire wire and Fire Extinguishers. The system also has the features like Built in Test facility (BITE) and Audio-Visual indication of “Over Heat” and “Fire” conditions in Engine compartment.

FEATURES.

Built in Test facility (BITE).

Monitoring of Detector units, Fire Wire, Alarm & Flasher unit and Fire Extinguishers.

Simple Man-Machine interface (MMI).

Environmental specification as per JSS 55555.

Easy maintenance and repair.

Low Power Consumption.

False Free Operation.

Auto cut off voltage below 18 V and above 32 V.

Electromagnetic Compatibility as per MIL Std 461C.

Audio and visual indication of “Over Heat” and “Fire”conditions in Engine compartment.