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Envelope detection for a double-sideband Low IF CW radar
2018 IEEE/MTT-S International Microwave Symposium - IMS, 2018The requirement to detect weak physiology motion by Doppler radar arises new architectures utilizing low intermediate frequency (IF) to achieve high signal-to-noise ratio (SNR). With the help of low IF, the significant motion information is modulated to IF domain, promoting the system's resistivity to both noise impact and AC distortion.
Xujun Ma +3 more
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Near Range Radar Image Reconstruction Algorithm by Weighted Envelopes Transformation
IEEE Geoscience and Remote Sensing Letters, 2018We proposed a methodology to apply inverse boundary scattering transform to process complex radar data with minimum imaging artifacts. Unlike other boundary extraction-based methods, such as shape estimation algorithm based on boundary scattering transform and extraction of directly scattered waves, the developed approach does not rely on peaks of ...
Iakov Chernyak, Motoyuki Sato
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Target Recognition of Radar HRRP Using the Envelope Reconstruction
2017In target recognition based on high range resolution profile (HRRP), the major challenge is to extract invariant and robust features from the measured high dimension range profile samples. Focused on the reduction of dimensionality, a novel algorithm for extracting HRRP features is proposed in this paper, and the Legendre moments with orthogonal and ...
Pengfei Zhang +3 more
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Reduction of Envelope Fluctuations in OFDM Radar Signals Using Coding Technique
2018 International Conference on Communication and Signal Processing (ICCSP), 2018The design of waveforms play an important role in the performance of radar systems. Multicarrier complementary phase-coded signal has been a field of interest for many researchers due to its prominent properties. This paper aims to reduce the Peak-to-Mean Envelope Power Ratio (PMEPR) of a Multicarrier Complementary Phase-Coded (MCPC) signal consisting ...
C.G. Raghavendra +5 more
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MIMO radar sequence design with constant envelope and low correlation side-lobe levels
AEU - International Journal of Electronics and Communications, 2021Abstract Transmit sequence design plays a significant role in multiple-input multiple-output (MIMO) radar to suppress correlation function side-lobe levels. This paper investigates two practical constraints, namely, constant envelope constraint to reduce the effect of nonlinear amplifiers, and low side-lobe levels to reduce the effect of interference
Ankur Thakur, Davinder Singh Saini
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A frequency modulated envelope delay FSCW radar for multiple-target applications
IEEE Transactions on Instrumentation and Measurement, 2000A frequency modulated (FM) FSCW radar technique that uses the envelope delay to determine range information is described. The analysis shows that the measured delay produced by the FM FSCW system consists of a term proportional to the delay of the strongest reflection and a superimposed oscillation with a period equal to the difference in the target ...
Maskell, Doug L., Woods, Graham S.
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Constant envelope robust waveform design for MIMO radar for parameter estimation
2017 IEEE 9th International Conference on Communication Software and Networks (ICCSN), 2017In MIMO radar, due to the inaccuracy of the prior information, the waveform designed according to the prior information can not meet the need of parameter estimation. A method of constant envelope robust waveform design for MIMO radar based on maximum mutual information (MI) criterion is proposed for this problem.
Congyi Sun, Chen Cui, Yang Gong
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Radar echo envelope extraction using Teager energy operator and wavelet transform
APCCAS 2008 - 2008 IEEE Asia Pacific Conference on Circuits and Systems, 2008As for the projectile with slots at the bottom, the amplitude envelope of monochromatic Doppler radar echo contains the information of the flying attitude. Owning to the nonlinear movement of the projectile, the echo can be modeled as an amplitude modulation (AM) and frequency modulation (FM) signal. To extract the envelope of radar echo scattered from
null Yuanqin Wang +3 more
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Assessment of Constant Envelope OFDM as a Class of Random FM Radar Waveforms
2020 IEEE Radar Conference (RadarConf20), 2020Random FM radar waveforms designed to possess a desirable spectral shape (on average) have been experimentally demonstrated for an increasing number of applications. However, the benefits of these waveforms can be offset by the computational cost of performing real-time spectral-shaping optimization for each random initial waveform.
Erik R. Biehl +3 more
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Fast computations of constant envelope waveforms for MIMO radar transmit beampattern
2010 IEEE Radar Conference, 2010Designing transmit beampattern with MIMO radars generally requires the waveforms to be able to have arbitrary cross-correlation values. In contrast to the available algorithms, the proposed technique provides a closed-form solution for the synthesis of covariance matrix, R, of the waveforms to obtain desired beampattern match.
Sajid Ahmed +3 more
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