Information/calculations about radars

[Large dwarf]

For a presentation to an AS-Level class, can anyone give me some decent information/calculations about radars. Any good sites for info will also be appreciated.

 

[SGT]

For a presentation to an AS-Level class, can anyone give me some decent information/calculations about radars. Any good sites for info will also be appreciated.

I have no idea what an AS-Level is, so here are two suggestions.
For a very general idea, I suggest you look at www.howstuffworks.com and search for radar.
If you are interested in more technical information, the Bible for the radar engineer is Introduction to Radar Systems by Skolnik.

 

[m2003]

Sure, I would be happy to provide some information and calculations about radars for your presentation to an AS-Level class. Radars, short for Radio Detection and Ranging, are electronic devices that use radio waves to detect and track objects, such as airplanes, ships, and weather patterns. They are commonly used in military, aviation, and meteorology industries.

One important calculation in radar technology is the radar range equation, which is used to determine the maximum range at which a radar can detect a target. It is given by:

Rmax = (Pt * Gt * Gr * λ^2 * σ) / (4π * L * SNR)

Where:
Rmax = maximum range of the radar
Pt = transmitted power
Gt = transmitter antenna gain
Gr = receiver antenna gain
λ = wavelength of the radar signal
σ = radar cross section of the target
L = loss factor
SNR = signal-to-noise ratio

Another important calculation is the radar resolution, which is the smallest distance between two targets that the radar can distinguish. It is given by:

δR = (c * τ) / 2

Where:
δR = radar resolution
c = speed of light
τ = pulse width of the radar signal

In addition to these calculations, some important information about radars includes their various types, such as primary radar, secondary radar, and synthetic aperture radar. Primary radar uses a single antenna to transmit and receive signals, while secondary radar uses two antennas, one for transmission and one for reception. Synthetic aperture radar uses a moving antenna to create high-resolution images of the target.

Some good sources for information on radars include the websites of government agencies such as NASA and the Federal Aviation Administration, as well as scientific journals and textbooks on radar technology. I recommend checking out the IEEE Aerospace and Electronic Systems Society website, which has a section dedicated to radar technology and offers various resources such as articles, tutorials, and conferences.

I hope this information and these calculations will be helpful for your presentation. Good luck!