Indian Army chief defends Modi’s ‘radar’ remark

[WarKa DaNG]

But not the AD radars

 

[PurAzamBaHadaf]

We cannot fight with Indians. Their level of stupidity is far too great for us to match.

 

[PradoTLC]

Defending Prime Minister Narendra Modi's remarks that clouds can help planes elude radar, Army chief General Bipin Rawat has said that some types of radar cannot see through clouds because of the manner in which it operates.

"There are various kinds of radars working with different technologies. Some have the capacity to see through, some don't have the capacity to see through (clouds)," Rawat said while interacting with the media in Ezhimala on Saturday.

"Some kinds of radar cannot see through clouds because of the manner in which it is operating. Sometimes we can, sometimes we can't," Rawat added.

In a television interview aired recently, Modi had said he used his "raw wisdom" to dispel doubts of defence experts, who wanted the Balakot air strike on February 26 to be deferred due to bad weather.

"The weather was not good on the day of air strike. There was a thought that crept in the minds of the experts that the day of strike should be changed.

"However, I suggested that the clouds could actually help our planes escape the radars," Modi had said while talking about the cross-border strike on terror camps in response to the Pulwama attack that claimed the lives of 40 CRPF personnel.

The prime minister's comment drew widespread ridicule and condemnation from various quarters, including a large number of memes on the social media.

General Rawat, who was in Ezhimala to review the passing-out parade of cadets of the Indian Navy and Indian Coast Guard, said that coordinated efforts are being made by various government agencies to tackle cross-border terrorism, he said.

"Through the coordinated efforts of various government agencies, now the NIA has stepped in, the Enforcement Directorate has stepped in and all are trying to ensure financing and funds available to terrorists are cut off," he said.

"We have been able to ensure that the insurgency has been brought under control. Of course in the Kashmir Valley, we have been witnessing ups and downs of insurgencies.

“That's because they got support from our western neighbour. At the same time many (people) are misguided due to a misinformation campaign spread by terrorists. But we have brought the situation under control," he said.

Indian Naval Academy (INA) Commandant Vice Admiral R B Pandit and Director of the Indian Institute of Science, Bengaluru, Anurag Kumar, were in attendance at the parade.

The parade also saw 15 female cadets marching shoulder to shoulder with their male counterparts to join the ranks of the Indian Navy, a release issued by the Academy said.There were 10 trainees from various friendly nations, including two each from Maldives, Myanmar and Seychelles, one from Tanzania and three from Sri Lanka.


https://www.nationalheraldindia.com...rk-says-some-radars-cannot-see-through-clouds

so I am guessing Indian radars can't see through clouds?... seems like they got confused lost 3 aircraft that day and couldn't hit a stationary target

He is 100% right.
Cloud does affect radars depending on the frequency band of radar

(QUOTE)
For example, the major bands along with their frequency ranges are L (1-2 GHz), S (2-4 GHz), C (4-8 GHz), X (8-12 GHz), Ku (12-18 GHz), K (18-27 GHz), Ka (27-40 GHz) ,V (40-75 GHz) and W (75-110 GHz) which are used for different applications. The X (8-12 GHz) band is mainly used for military applications like missile guidance. It is called X band as for long, it was a secret band widely used in the second world war. A typical airport surveillance radar, which detects the position of an aircraft in the terminal area operates at 2.7 to 2.9 GHz and 1.03 to 1.09 GHz). It can cover an area of 96 Km at an elevation of 25,000 feet.

Radars operating at such frequencies are not significantly affected by change in weather conditions. However, when the weather conditions are extreme, they can find it hard to detect a fighter aircraft zooming at very high speeds.

A number of researchers have authored papers on the subject of attenuation of radio waves by rain, fog and clouds. A detailed report by Rand Corporation for US Air Force was published way back in 1975. According to it, for a dense cloud, the attenuation of the signal could be 0.1 dB/km for X band radar. It implies signal attenuation by a factor of 10 if the target is 50 Km from the source. The attenuation could increase by a factor of 10 if there is rainfall at the rate of 25 cm/hr.

According to Meneghini et al. (1986), signal attenuation by cloud and precipitation is a serious problem associated with airborne or spaceborne millimetre wave operation. Lhermitte (1990) wrote in the Journal of Atmospheric And Oceanic Technology, that at 15 GHz the attenuation coefficient is 0.12 dB per mm per hour of rain intensity. It implies that if the rain intensity is 1 cm/hr, the attenuation of signal power can be in the range of 1.2 dB or approximately 31%. For a 30 GH z signal, the attenuation under heavy tropic rain could be in the range of 30 dB (a factor of 1,000). Besides rain, lightning-based scattering can also attenuate radar signals over short periods which can open new opportunities for fighter aircraft.

In fact, attenuation of radio waves is widely used in measuring rain intensity and moisture content. Below 1 GHz, the attenuation is not that significant, but heavy rains, clouds and lightning effects can still make some impact on the measurement process. Having said all that, it must be stated that as a pilot in an aircraft also communicates with the ground station using radio waves, the attenuation can also act as a bottleneck in maintaining a seamless communication link with the ground station. That is the reason why a lot of aircraft accidents happen during bad weather.

However, when the target is well defined, the risk can be averted. In a war, a lot of risky decisions need to be made.

To sum up, Modi’s statement does hold strong scientific basis which can be corroborated by existing research on the subject. The X band radar is significantly attenuated by rains, clouds and fog and related climatic conditions. For lower bands, the attenuation is less significant, but in high-speed warfare, slight change in conditions can offer huge leverage.

(The author is a Postdoctoral Associate at MIT. He earned his doctorate from Cambridge University for his work on radio signal sensing using microstructures. He has published papers in the field of electromagnetism and antennas in leading journals like Physical Reviewer Letters, Transactions of the Royal Society and Annalen der Physik.(QUOTE)

the only problem with your BullCrap story is that PAF fighters intercepted twice, once during your aborted Ballot strike causing to turn tail and dump your load, shot down 2 planes caused confusion for your confused South Indian pilots resulting in shooting down of your own help and bombing the living day lights of you....sorry bombed you in broad day light for which you could not intercept.

now if we had "faulty" radars that could not see through clouds (muhahahahha) the entire IAF would have been extinct in a matter of hours if actually had working radars...

seriously you Indians will say anything...

 

[Mugwop]

How many times are these people gonna humiliate themselves?