Bistaticmultistatic radar system concept for purposes of interrogating difficult and obscured targets in urban environments via the application of low-altitude smart or robotic-type unmanned air vehicle platforms. The interpolation unit interpolates the pixel value of each color signal at an interpolation point using the pixel values of pixels in the same color falling within a predetermined interpolation region including the interpolation point, and outputs the pixel value as an interpolated pixel value at the interpolation point for each color signal. The first half fits snugly within the second half and the two halves may be rotated around their longitudinal axes with respect to each other to produce unlocked and locked positions. This leads to a higher reliability of the interoperability of terminals and network elements in mobile radio networks including reconfigurable terminals. At each hop, a photonic switching element in a parallel, photonic network is reserved. The released carbon is deposited on and bonds to sidewalls of the metal structure during the metal etching process to passivate the sidewalls of the metal structure and prevent lateral etching of the sidewalls during the metal etching process.