We investigate passive radar imaging of aircraft using re ected TV signals. Such passive multistatic \radar" has been developed to detect and track aircraft with good accuracy. The additional capability of image formation would help to identify targets. The Fourier space sampling provided by passive radar is nonuniform. For a given aircraft ight path, di erent receiver locations give rise to di...

Fourier transform Consider the interval [0, λ] and suppose that we identify the point λ with 0 (i.e., think of it as a Torus and work modulo λ). Another way to think about this is as the basic cell of the lattice λZ, whose dual is the lattice (1/λ)Z. A periodic function on this torus has to period length of the form λ/n for an integer n. Thus, the Fourier transform of a function on this torus i...

Fourier transform Consider the interval [0, λ] and suppose that we identify the point λ with 0 (i.e., think of it as a Torus and work modulo λ). Another way to think about this is as the basic cell of the lattice λZ, whose dual is the lattice (1/λ)Z. A periodic function on this torus has to period length of the form λ/n for an integer n. Thus, the Fourier transform of a function on this torus i...

toluene and benzene were eliminated using multi-walled carbon nanotubes (mwcnts). in order to investigate influence of acid treatment on the mwcnts adsorption capacities, the mwcnts were functionalized by nitric acid (10 m) under reflux conditions for 2 h. fourier transform infrared (ftir) and raman spectroscopy were employed to confirm the formation of functional groups on the nanotubes surfac...