Mumbai to install doppler radar

[sudhir007]

Mumbai to install doppler radar - Mumbai - City - The Times of India

MUMBAI: The city would finally have a Doppler Radar installed by the month-end at Navy Nagar in Colaba, a development which was much awaited since the July 26, 2005 deluge.

"The radar would be installed and functional by the end of this month," relief and rehabilitation minister, Narayan Rane told reporters on Wednesday after reviewing monsoon preparedness in the state.

Earlier, a similar radar, ordered from China was cancelled by the State Government citing quality norms. The radar to be installed now is of Indian make, Rane said.

The Government has initiated a mobile alert service to alert local people about emergency situation. Even the website of the Indian Meteorological Department would be updated on an hourly basis, Rane said.

Drainage cleaning is almost over in the city except in a few areas, including railway culverts. The long term projects like cleaning Mithi river and Brimstowad are on, the minister said.

Most infrastructure works in the city have been stalled except Monorail and Metro rail but these would not create a problem during heavy monsoon, he said.

In rest of the state, villages under blue (danger) zones have given warnings and assistance would be taken from Navy and Air Force in any emergency situation, Rane said.

 

[arya-is-here]

 

[ARCHON]

Somebody explain to me what are the benefits of a Doppler radar.

 

[brahmastra]

Pulse-Doppler Radar - Weather Doppler Radar

When watching the weather, it is this system which allows for the swirling depictions of weather patterns and, more importantly, detailed analysis of their movement.
The Pulse-Doppler radar system allows not only the determination of linear velocity, as in the case of the radar gun, but also allows for the calculation of radial velocities. It does this by sending pulses instead of beams of radiation. The shift not only in frequency, but also in carrier cycles, allows one to determine these radial velocities.

In order to achieve this, careful control of the radar system is required. The system has to be in a coherent state which allows for stability of the phases of the radiation pulses. One drawback to this is that there is a maximum speed above which the Pulse-Doppler system cannot measure radial velocity.

To understand this, consider a situation where the measurement causes the phase of the pulse to shift by 400 degrees. Mathematically, this is identical to a shift of 40 degrees, because it has gone through an entire cycle (a full 360 degrees). Speeds causing shifts such as this are called the "blind speed." It is a function of the pulsed repetition frequency of the signal, so by altering this signal meteorologists can prevent this to some degree

I think it is not related to defence.

 

[ARCHON]

Pulse-Doppler Radar - Weather Doppler Radar

When watching the weather, it is this system which allows for the swirling depictions of weather patterns and, more importantly, detailed analysis of their movement.
The Pulse-Doppler radar system allows not only the determination of linear velocity, as in the case of the radar gun, but also allows for the calculation of radial velocities. It does this by sending pulses instead of beams of radiation. The shift not only in frequency, but also in carrier cycles, allows one to determine these radial velocities.

In order to achieve this, careful control of the radar system is required. The system has to be in a coherent state which allows for stability of the phases of the radiation pulses. One drawback to this is that there is a maximum speed above which the Pulse-Doppler system cannot measure radial velocity.

To understand this, consider a situation where the measurement causes the phase of the pulse to shift by 400 degrees. Mathematically, this is identical to a shift of 40 degrees, because it has gone through an entire cycle (a full 360 degrees). Speeds causing shifts such as this are called the "blind speed." It is a function of the pulsed repetition frequency of the signal, so by altering this signal meteorologists can prevent this to some degree

I think it is not related to defence.

Thank you sir for the info.

 

[Dr.Evil]

Are there any military implications of this Radar as the chinese radar was not allowed to be putup in mumbai by Defence Ministry.

Dones any one have anymore info on it ?

 

[Kinetic]

Are there any military implications of this Radar as the chinese radar was not allowed to be putup in mumbai by Defence Ministry.

Dones any one have anymore info on it ?

The govt agencies due to their faulty procurement policies becoming a easy target of cheap Chinese systems. IMD (India Meteorological Department) floated a international tender of some doppler radars and with other contenders there was ISRO-BEL radar(ISRO developed, BEL manufactured). Though ISRO-BEL radar was far better than Chinese, due to marginal low cost of Chinese radar, it won the competition. All those radars will be placed near strategic locations and important cities so MoD given a big no to the deal. Later it was found in trials that ISRO radars are far more better than others as far as our requirements are concerned, bug free and the winner. Its only possible in India that an Indian govt org competing against foreign companies for a tender announced by another govt agency!!!!