Post

How to get URL link on X (Twitter) App

On the Twitter thread, click on or icon on the bottom
Click again on or Share Via icon
Click on Copy Link to Tweet
Paste it above and click "Unroll Thread"!
More info at Twitter Help

Roy🇨🇦

@GrandpaRoy2

Jul 3 • 7 tweets • 5 min read • Read on X

Scrolly

https://twitter.com/grandparoy2/status/1906289909159416275

As Ukraine introduces high speed drone interceptors to defeat Russian “Shahed-136” (Rus: Geran-2) kamikaze UAVs, it should be anticipated that the Russians will react with countermeasures.
The battle between Russian reconnaissance UAVs and Ukrainian FPVs provides a template.
1/

https://twitter.com/grandparoy2/status/1906289909159416275

https://twitter.com/grandparoy2/status/1844777831127044124

Special Ukrainian FPVs began intercepting and destroying large numbers of reconnaissance drones such as “Zala” and “Supercam”.
The Russians first responded with an EW system that detected the video signal of the FPV, and initiated strong jamming in that frequency.
2/

https://twitter.com/grandparoy2/status/1844777831127044124

https://twitter.com/grandparoy2/status/1896610314424353079

This system apparently had some success, but was replaced by a rear-facing camera and an automated evasion program, possibly with some machine learning.
Upon sighting an approaching FPV, the Russian UAV automatically turns and dives, significantly complicating final attacks.
3/

https://twitter.com/grandparoy2/status/1896610314424353079

https://twitter.com/grandparoy2/status/1938897241584083255

The rear cameras with evasion would most likely be the first countermeasure mounted on Shaheds if the Ukrainian interceptors continue their successes.
The recently seen Shahed with AI autonomy and terrain following is likely much too expensive to be made in large numbers.
4/

https://twitter.com/grandparoy2/status/1938897241584083255

https://twitter.com/grandparoy2/status/1903187715941863455

Shaheds use satellite navigation, and the struggle between increased Ukrainian EW jamming and more jam-resistant Russian CRPA antenna systems will continue.
The first 4-element “Cometa” has been replaced with 8, 12, and now 16 element CRPAs produced by Russia, China, and Iran.
5/

https://twitter.com/grandparoy2/status/1903187715941863455

Controlled Reception Pattern Antennas resist jamming by adjusting reception.
Using multiple elements directions of minimal sensitivity are steered towards a jammer, while maintaining gain for GPS signals.
Adaptive beamforming counters multiple jammers, giving stable reception.
6

Sources
unian.ua/weapons/viyna-…
t.me/infomil_live/1…
t.me/serhii_flash/4…
t.me/VictoryDrones/…
militarnyi.com/uk/news/rosiya…

• • •

Missing some Tweet in this thread? You can try to force a refresh

This Thread may be Removed Anytime!

Twitter may remove this content at anytime! Save it as PDF for later use!

More from @GrandpaRoy2

Roy🇨🇦

@GrandpaRoy2

Jul 4

https://twitter.com/grandparoy2/status/1807859742574010571

A Russian blogger reveals the pressures faced by a net drone operator distracted by many observers while attempting to take down Baba Yagas.

“There is an important point that is rarely discussed out loud - psychological pressure on the operator when using the net launcher.
1/

https://twitter.com/grandparoy2/status/1807859742574010571

“When the operator moves to the target, he is already under stress: the interception is live, the broadcast is monitored by commanders, colleagues, sometimes the entire headquarters. Commands are flying into the radio:
2/

“ ‘Higher!’ - ‘Lower!’ - ‘Come on, shoot!’ - ‘Don't let us down!’

All this prevents concentration. The operator begins to worry, rush, fire at the wrong moment. The result is a miss.
And the enemy drone continues the mission.
3/

Read 16 tweets

Roy🇨🇦

@GrandpaRoy2

Jul 2

https://twitter.com/grandparoy2/status/1932013314038726967

A Russian “Chernika-2” (Черніка-2; Blueberry-2) kamikaze UAV was recovered that apparently has autonomous terminal targeting capability.
This cheap foam and plastic UAV has a 100km range and carries a formidable 3.5kg warhead.
1/

https://twitter.com/grandparoy2/status/1932013314038726967

https://twitter.com/grandparoy2/status/1897021011134128346

The capabilities of this drone are roughly similar to the Russian “Molniya-2”, in particular the warhead capacity.
A Russian KZ-6 shaped-charge 3kg demolition device has been frequently used as a warhead for the Molniya, or equivalent such as the KOBCh-2.5.
2/

https://twitter.com/grandparoy2/status/1897021011134128346

https://twitter.com/grandparoy2/status/1933194977141813671

Chernika-2 apparently also has an autopilot function to a specific target area, so the operator doesn't need to constantly control it.
The terminal strike stage of the flight can be controlled by the operator, or handed off to the targeting algorithms if jamming is present.
3/

https://twitter.com/grandparoy2/status/1933194977141813671

Read 4 tweets

Roy🇨🇦

@GrandpaRoy2

Jun 30

https://twitter.com/grandparoy2/status/1781228972053004636

A Ukrainian company called UADamage has developed a machine-learning drone that uses four different sensors to detect landmines.
With day and infrared cameras, a magnetometer, and a ground penetrating radar (in development), up to 10,000 square meters can surveyed in a day.
1/

https://twitter.com/grandparoy2/status/1781228972053004636

The system is trained with machine learning algorithms to automatically detect explosive objects by analyzing magnetic field maps, combined with the use of a magnetometer.
2/

The flash drive is removed after each flight and inserted in a computer.
The sensor data is then fused into a single map of the surveyed area.
3/

Read 4 tweets

Roy🇨🇦

@GrandpaRoy2

Jun 28

https://twitter.com/grandparoy2/status/1935607768280334710

Further information has been released regarding the downed Shahed-136s with imaging guidance and AI capabilities.
Details of materials and electronic components indicate Iranian fabrication.
The camera is an analog thermal imager for both reconnaissance and terrain following.
1/

https://twitter.com/grandparoy2/status/1935607768280334710

The NVIDIA Jetson Orin AI board is specialized for both video processing tasks and AI.
Information from the camera is compared to stored models to select a target in autonomous mode, or stored maps for terrain following.
Each system is intended to defeat Ukrainian GPS jamming.
2/

Another jam resistant component is a CRPA satellite navigation system, in this sample a 4-element antenna connected to the Iranian “Nasir” GPS.
This system is capable of receiving satellite signals in both the L1 and highly accurate L5 bands.
3/

Read 5 tweets

Roy🇨🇦

@GrandpaRoy2

Jun 27

https://twitter.com/grandparoy2/status/1891565173892104663

“Drone war is not the future, it is yesterday.”
A Russian blogger gives advice on surviving under the constant gaze of Mavic drones.

“How to survive under the ‘bird’: the fight against small surveillance UAVs.
1/

https://twitter.com/grandparoy2/status/1891565173892104663

“Where there is Mavic, there is death. This is not a joke, but the everyday reality of the front. Small enemy reconnaissance aircraft fly without days off or holidays. Here's how not to become a meatball in their reports.
2/

“1. A drone detector is a soldier's best friend
A group must have at least one, or better yet, a pair of devices like ‘Bulat’. Cheaper than a death notice. Constant air monitoring is a rule of survival.
3/

Read 14 tweets

Roy🇨🇦

@GrandpaRoy2

Jun 25

Ukrainian fortifications have changed greatly from battalion defense areas with huge strongholds that were used at the beginning of the war.
General Syrskyi explained that after the experiences of the defense of Bakhmut the army moved to company strongholds, then platoon ones.
1/

In an interview Syrskyi said:
“Now we see that the most effective position is the maximum for the separation. And mostly these are groups of trenches, even the so-called "fox burrows", which make it impossible for the enemy to use strike drones.
2/