TY - GEN
T1 - Novel windowing technique realized in FPGA for radar system
AU - Escamilla-Hernandez, E.
AU - Kravchenko, V. F.
AU - Ponomaryov, V. I.
AU - Ikuo, Arai
PY - 2006
Y1 - 2006
N2 - To improve the weak target detection ability in radar applications a pulse compression is usually used that in the case linear FM modulation can improve the SNR. One drawback in here is that it can add the range side-lobes in reflectivity measurements. Using weighting window processing in time domain it is possible to decrease significantly the side-lobe level (SLL) and resolve small or low power targets those are masked by powerful ones. There are usually used the classical windows such as Hamming, Hanning, etc. in window processing. Additionally to classical ones in this paper we also use a novel class of windows based on atomic functions (AF) theory. For comparison of simulation and experimental results we applied the standard parameters, such as coefficient of amplification, maximum level of side-lobe, width of main lobe, etc. To implement the compression-windowing model on hardware level it has been employed FPGA. This work aims at demonstrating a reasonably flexible implementation of FM-linear signal, pulse compression and windowing employing FPGA's. Classical and novel AF window technique has been investigated to reduce the SLL taking into account the noise influence and increasing the detection ability of the small or weak targets in the imaging radar. Paper presents the experimental hardware results of windowing in pulse compression radar resolving several targets for rectangular, Hamming, Kaiser-Bessel, up (x), Ξ n(x), Fup 4 2(x)·B 2(x), Fup 4(x)·D 3(x), Fup 4(x)·D 3.5(x), Fup 6 2(x)·G 2 2(x), Fup 6(x)·G 3(x), Fup 6 2(x)·G 3(x) functions windows. The windows created by use the atomic functions offer sufficiently better decreasing of the SLL in the case of noise presence and when we move away of the main lobe in comparison with classical windows.
AB - To improve the weak target detection ability in radar applications a pulse compression is usually used that in the case linear FM modulation can improve the SNR. One drawback in here is that it can add the range side-lobes in reflectivity measurements. Using weighting window processing in time domain it is possible to decrease significantly the side-lobe level (SLL) and resolve small or low power targets those are masked by powerful ones. There are usually used the classical windows such as Hamming, Hanning, etc. in window processing. Additionally to classical ones in this paper we also use a novel class of windows based on atomic functions (AF) theory. For comparison of simulation and experimental results we applied the standard parameters, such as coefficient of amplification, maximum level of side-lobe, width of main lobe, etc. To implement the compression-windowing model on hardware level it has been employed FPGA. This work aims at demonstrating a reasonably flexible implementation of FM-linear signal, pulse compression and windowing employing FPGA's. Classical and novel AF window technique has been investigated to reduce the SLL taking into account the noise influence and increasing the detection ability of the small or weak targets in the imaging radar. Paper presents the experimental hardware results of windowing in pulse compression radar resolving several targets for rectangular, Hamming, Kaiser-Bessel, up (x), Ξ n(x), Fup 4 2(x)·B 2(x), Fup 4(x)·D 3(x), Fup 4(x)·D 3.5(x), Fup 6 2(x)·G 2 2(x), Fup 6(x)·G 3(x), Fup 6 2(x)·G 3(x) functions windows. The windows created by use the atomic functions offer sufficiently better decreasing of the SLL in the case of noise presence and when we move away of the main lobe in comparison with classical windows.
KW - FPGA
KW - Frequency modulated radar
KW - SNR
UR - http://www.scopus.com/inward/record.url?scp=33645686464&partnerID=8YFLogxK
U2 - 10.1117/12.643274
DO - 10.1117/12.643274
M3 - Contribución a la conferencia
AN - SCOPUS:33645686464
SN - 0819461032
SN - 9780819461032
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Real-Time Image Processing 2006 - Proceedings of SPIE-IS and T Electronic Imaging
T2 - Real-Time Image Processing 2006
Y2 - 16 January 2006 through 17 January 2006
ER -