receiving antennas, sidelobes may pick up interfering signals, and increase the noise level in the receiver. The power density in the sidelobes is generally...
7 KB (741 words) - 09:55, 8 March 2024
Chirp compression (section Far-out sidelobes)
with the far-out sidelobes are much more serious. Here these sidelobes now rise to −25 dB at +/-T/2. As a guide, the far-out sidelobe levels are given...
64 KB (10,411 words) - 09:04, 28 May 2024
and fourth sidelobes, but result in a discontinuity at the edges and a 6 dB/oct fall-off. The truncated coefficients do not null the sidelobes as well,...
73 KB (8,651 words) - 20:46, 29 July 2024
appropriate window functions. The sidelobes can cause significant image degradation. First, the peaks of the stronger sidelobes may cause a string of progressively...
10 KB (1,294 words) - 17:38, 31 January 2024
The other lobes are called "sidelobes", and usually represent unwanted radiation in undesired directions. The sidelobe in the opposite direction from...
2 KB (295 words) - 12:14, 27 March 2024
be desirable to start with an autocorrelation function having very low sidelobes. The governing code pattern, he insisted, could be unambiguously recognized...
16 KB (1,831 words) - 19:14, 30 August 2024
larger than the wavelength, diffraction usually causes many narrow sidelobes, so the sidelobe pattern is complex. There is also usually a backlobe, in the opposite...
42 KB (5,157 words) - 07:12, 9 September 2024
affecting radars along other lines of sight through the radar receiver's sidelobes (sidelobe jamming). Mainlobe jamming can generally only be reduced by narrowing...
99 KB (11,851 words) - 20:54, 9 September 2024
transmitted information. For example, a given radar antenna will have sidelobes emanating from a direction other than that in which the main antenna is...
54 KB (6,786 words) - 15:56, 25 August 2024
beamwidth, and when fully developed and carefully measured it has no obvious sidelobes: see Parametric array. Its major disadvantage is very low efficiency of...
101 KB (12,471 words) - 16:31, 24 July 2024