sidelobe level
Analysis of Sidelobe Level and Beamwidth of Uniform Concentric Circular Arrays Utilizing Kaiser Amplitude Weighting
... the sidelobe and beamwidth behavior of the array at different ...both sidelobe levels and beamwidth for comparison with the Kaiser ...the sidelobe level has dropped to less than ...mainlobe ...
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Nonuniformly Spaced Linear Array Design for the Specified Beamwidth/Sidelobe Level or Specified Directivity/Sidelobe Level with Coupling Consideration
... achievable sidelobe level (SLL) are performed and for the first time, the graphs which show the relation between the beamwidth, sidelobe level and number of elements for NUSLA are ...and ...
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Ultra low range sidelobe level pulse compression waveform design for spaceborne meteorological radars.
... range sidelobe level requirement for a full deramp mode o f operation is o f approximately -50 dB, but only for the surface return whose time position is accurately known through the altimeter ...range ...
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A 8x1 Sprout-Shaped Antenna Array with Low Sidelobe Level of -25 dB
... This paper proposes a 8 × 1 sprout-shaped antenna array with low sidelobe level (SLL) for outdoor point to point applications. The array has the dimensions of 165 mm × 195 mm × 1.575 mm and is designed on ...
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Sidelobe-Level Suppression for Circular Antenna Array via New Hybrid Optimization Algorithm Based on Antlion and Grasshopper Optimization Algorithms
... side-lobe level (SLL) of antenna arrays is a significant factor that can enhance the reliability and validity of a communication ...side-lobe level of the array’s radiation ...
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A COMPARATIVE STUDY OF PATTERN SYNTHESIS OF NONUNIFORM CIRCULAR ARRAYS USING FIREFLY, BAT AND CUCKOO SEARCH ALGORITHMS
... minimum sidelobe level (SLL) and maximum directivity while first null beam width is not allowed to exceed the subsequent values obtained with uniform circular ...
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Reduction in sidelobe and SNR improves by using Digital Pulse Compression Technique
... Shinriki, et al.,[8] have given a new idea of pulse compression method for normal pulse. In this proposed method a filter whose impulse response in frequency domain is the ratio between the desired waveform and input ...
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Waveform design for spaceborne synthetic aperture radar
... T h e pulse com pression theory has been in tro d u ced in order to get a high range reso lu tio n as well as a good velocity D oppler shift detection. A large tim e-b a n d w id th p ro d u ct { B T > 1) is achieved ...
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A Subarray Design Method for Low Sidelobe Levels
... For comparison, suppose that the orientations of all subarrays are the same. In each subarray, the 21 elements are uniformly distributed in the 2.9λ × 2.9λ aperture, i.e., a 5 × 5 elements array with the four elements on ...
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Synthesis of Linear Antenna Arrays using Accelerated Particle Swarm Optimization Algorithm
... “Linear array geometry with minimium sidelobe level and null control using particle swarm optimization,” IEEE Transactions on Antennas and Propagation, Vol.. “Application of Taguchi’s op[r] ...
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Synthesis of a Linear Antenna Array for Maximum Side lobe Level Reduction
... Lobe Level (SLL) of antenna arrays to save power and improve Quality of Service (QoS) by ensuring maximum radiation in desired direction, several methods are available in ...first sidelobe level of ...
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Low Power LFM Pulse Compression RADAR with Sidelobe suppression
... maximum sidelobe level is chosen for applications with strong interfering signals near the frequency of ...more sidelobe attenuation than hamming window and hanning ...
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Robust Adaptive Sidelobe Canceller Using SV Mismatch Estimation
... high sidelobe level of the adaptive beam ...adaptive sidelobe canceller (IASLC) method can not only suppress the sidelobe level, but also reduce the processor’s degrees of freedom, ...
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A Robust Direct Data Domain Least Squares Beamforming with Sparse Constraint
... suppress interferences and noise effectively, it suffers from several drawbacks such as reduced degrees of freedom (DOF), and relatively high sidelobe level [2, 8]. Some improved algorithms that are capable ...
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Analysis of Non Linear Frequency Modulation (NLFM) Waveforms for Pulse Compression Radar
... Figure 8 shows the flow of the simulation system to evaluate the Doppler effect of the compressed signal. The first and second process of the simulation is to generate the NLFM complex signal that has been added with the ...
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INVESTIGATIONS ON RADIATION BEAM SHAPING
... Uniform linear arrays are analyzed and designed by several authors [1-3]. They yield radiation patterns with one main lobe and symmetric side lobe levels. Radiation patterns are specified in terms of main beamwidth and ...
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Radar Imaging of Sidelobe Suppression Based on Sparse Regularization
... In some special applications (such as detection of ship on the sea, lights along the airline roads, and distribu- tion of scattering points of warhead etc.), the main scattering targets appear in a sparse way over a big ...
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Application of Complete Complementary Sequence in Orthogonal MIMO SAR System
... optimal sidelobe level performance, which is satisfied with the requirement of the orthogonal Multiple Input Multiple Output (MIMO) radar ...high sidelobe level in Synthetic Aperture Radar ...
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SLL reduction in Antenna array using modified PSOGSA algorithm
... From the results it is clear that PSOGSA has minimized SLL to the greatest extent and has a low gain value at the null directions as well. Thus, we can say that PSOGSA has successfully minimized both the sidelobe ...
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Non Linear Frequency Modulated Nested Barker Codes for Increasing Range Resolution
... peak sidelobe level and low integrated ...Multi level bi-phase pulse compression codes (MBPPC),sidelobes are lowered [10,11] but its drawback is energy ...the level of the side lobes is ...
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