side lobe

(redirected from Sidelobe)

side lobe

See antenna.

side lobe

[′sīd ‚lōb]
(electromagnetism)
References in periodicals archive ?
Two main categories of technologies are identified: - Sidelobe cancellation applied to aperture antennas - Adaptive beamforming based on 2D phased array The first technology allows cancelling adaptively an interference signal received from a sidelobe of the aperture antenna thanks to an additional omnidirectional antenna allowing nulling in the digital domain or at IF a specific part of the beam pattern.
I will present some examples of surprising observational limitations, both in real-world and simulated data (DDEs, calibration ghosts, sidelobe confusion, calibration noise) and discuss their possible impact on future radio surveys.
Two classification parameters, namely discrete quaternion correlator output (p-value) and the peak to sidelobe ratio (PSR), were used in classifying the input face images, and to categorise them either into the authentic class or non-authentic class.
Results from the US trials demonstrated that only a full AAS can meet critical upper sidelobe suppression requirements with margin, while simultaneously providing the highest possible antenna gain over an electrical tilt range of more than 10 degrees.
Rugate filter sidelobe suppression using quintic and rugated quintic matching layers, Applied Optics 28(14): 2949-29451.
Binary codes with low autocorrelation sidelobe levels and high Discriminating factors are useful for radar pulse compression [4], channel estimation, and spread spectrum communication applications.
Antenna sidelobe gain does not meet the reference envelope G=29-25log[THETA] towards the interfered adjacent satellite.
It can be seen that the MVDR method has a deeper null nearby the interference, but its sidelobe level is relatively higher, and the maximum response axis (MRA) is a little deviated from the actual source position.
First year Wilkinson Microwave Anisotropy Probe (WMAP) observations: galactic signal contamination from sidelobe pickup.
When operating a system in the presence of one or more strong interfering sources, low sidelobe levels may not be enough to ensure adequate reception of the desired signal.
This bin typically was 1 m below the mean water level at that location and was the highest bin not affected by instrument sidelobe interference.
Radars that employ the Doppler principle in their signal processing first emerged during World War II to better detect aircraft and other moving objects in the presence of "cluttering" background echoes created by the radar beam's sidelobe emissions.