Recent content by Nabla_101

Hi all, I read an article about Harold White's Warp drive experiment at Nasa (http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20110015936.pdf) I understand the basic idea of the experiment - to try to create small pertubation in spacetime and measure it using the interferometer - but I...

Thanks, I'm aware of the laser positioning systems out there, but they are unsuitable for all applications, and UWB may offer more advantages in some cases. But I'm assuming the principle is exactly the same, and so how are range and accuracy requirements related to the required pulse width...

Hi, I was wondering what the advantages are of using an Ultra Wide-Band (UWB) radar system (also known as impulse radar) where you transmit an extremely small pulse (sub-nanosecond), and hence a very large bandwidth, over conventional radar that use continuous waves or larger pulse widths...

Hi, I was reading about anechoic chambers for performing tests of RF equipment, and read that they are usually screened rooms, built as a Faradays cage (Grounded, closed metal structure) in order to block radiation from the outside, and stop radiation escaping. But also they coat the...

Thanks. Yes in the 1D case where you have just one wave, reflected, and having its phase measured with respect to its reflected copy, then the initial phase and time of transmission are irrelevant, and any difference in phase is due solely to a change in distance between transmitter and...

I mean the initial time that the transmissions start at A and B, so that A and B start their transmissions at slightly different times rather than simultaneously. Sorry I didn't word it very well there

Hi, I can't get my head round this: Suppose I have two transmitters A and B, at different distances (d_A, d_B) from a reciever, C. Each transmitter transmits a sinusoidal wave towards the receiver, which I will be modelling as 1 dimensional traveling waves, each given by the equation...