peak sidelobe level
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2021 ◽  
Vol 30 (2) ◽  
pp. 388-395
Author(s):  
M. M. Pishrow ◽  
J. Abouei ◽  
H. Ghaferi




2021 ◽  
Vol 5 (1) ◽  
pp. 9
Author(s):  
Novalia Pertiwi ◽  
Fannush Shofi Akbar ◽  
Eko Setijadi ◽  
Gamantyo Hendrantoro

In this paper, a thinned linear array with Cavity backed U-slot Patch has been investigated using the Genetic Algorithm to minimize peak sidelobe level and the number of antenna elements. One of the essential steps in the Genetic Algorithm method is a crossover, which uses the Paired Top Ten and Combined Top Five rules applied to the Cavity backed U-slot Patch antenna. The peak sidelobe level value is -18.63 dB with a array filling of 63.33% at the broadside angle using Combined Top Five rules. In Paired Top Ten, the peak sidelobe level value is -19.48 dB with a array filling of 70%. The two methods are still better as compared to a dense array. This study is essential in the development of radar technologies since it needs a low sidelobe level.





2020 ◽  
Vol 171 ◽  
pp. 107450 ◽  
Author(s):  
Wen Fan ◽  
Junli Liang ◽  
Guoyang Yu ◽  
Hing Cheung So ◽  
Guangshan Lu


2019 ◽  
Vol 18 (10) ◽  
pp. 2081-2085 ◽  
Author(s):  
Yanki Aslan ◽  
Jan Puskely ◽  
Antoine Roederer ◽  
Alexander Yarovoy


2019 ◽  
Vol 67 (8) ◽  
pp. 5399-5410
Author(s):  
Siddhartha Krishnamurthy ◽  
Daniel W. Bliss ◽  
Christ D. Richmond ◽  
Vahid Tarokh


2018 ◽  
Vol 18 (1) ◽  
pp. 27 ◽  
Author(s):  
Muhamad Ridwan Widyantara ◽  
Sugihartono ◽  
Fiky Y. Suratman ◽  
Slamet Widodo ◽  
Pamungkas Daud

Non Linear Frequency Modulation (NLFM) method can suppress the peak sidelobe level without additional windowing function. NLFM doesn’t require any weighting function because it has inbuilt one. NLFM has a variable frequency deviation function due to the relation between frequency and time of the signal which is not linear so that it is possible to suppress of peak sidelobe level. This paper studies the characteristic of various NLFM waveform, such as NLFM Tri Stage Piece Wise (TSPW), NLFM S, and NLFM Taylor. The study of Pulse Compression of NLFM waveform consists of three aspects. First, analysis of pulse compression performance. Second, analysis of background noise. Last, analysis of Doppler effects. The simulation is done using Matlab software. The lowest  value Peak Sidelobe Level (PSL)of NLFM TSPW is about -20 dB while NLFM S and NLFM Taylor are about -32 dB and -39 dB. Additive White Gaussian Noise (AWGN) and Doppler Effect influenced the value of PSL for each NLFM waveform. NLFM Taylor has the best NLFM waveform when the Doppler Effect and AWGN cause the value of PSL become high. Comparison between NLFM Taylor and Linear Frequency Modulation(LFM) is done in radar surveillance applications to analyze the detectability performance where the condition of Radar Cross Section (RCS) for each target has different significant value. The three targets are commercial airplanes, helicopter and fighter. For detectability performance, NLFM Taylor can detect more clearly than LFM conventional.



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