Results 191 to 200 of about 45,007 (228)

On joint phase-envelope use in radar CFAR processing

SPIE Proceedings, 2005
A method assuming linear phase drift is presented to improve radar detection performance. Its use is based on the assumption that the target illumination time comprises multiple coherent pulses or coherent processing intervals (CPI). For example in a conventional scanning radar, this often inaccurate information can be used for statistical data mapping
Juho Vihonen, Timo Ala-Kleemola, Timo Hintikka, Juha Jylha, Ari Visa   +4 more
openaire   +1 more source

Finite Alphabet Constant-Envelope Waveform Design for MIMO Radar

IEEE Transactions on Signal Processing, 2011
The design of waveforms with specified auto- and cross-correlation properties has a number of applications in multiple-input multiple-output (MIMO) radar beampattern design. In this work, two algorithms are proposed to generate finite alphabet constant-envelope (CE) waveforms with required cross-correlation properties.
S. Ahmed, J. S. Thompson, Y. R. Petillot, B. Mulgrew   +3 more
openaire   +1 more source

Echo envelope distribution in high resolution radar imaging system

Experience of Designing and Applications of CAD Systems in Microelectronics. Proceedings of the VI-th International Conference. CADSM 2001 (IEEE Cat. No.01 EX473), 2002
An investigation of the stochastic features of radar image speckle patterns is presented in the paper. An analytical relation between the envelope distribution law of the received signal and scattering parameters of the object at radar imaging is derived.
I. Prudyus, A. Synyavskyy
openaire   +1 more source

Constant envelope OFDM for power-efficient radar and data communications

2009 International Waveform Diversity and Design Conference, 2009
This paper offers a tutorial treatment of constant envelope OFDM, covering power efficiency and spectral efficiency tradeoffs and discusses recent advancements in applying CE-OFDM to radar. A dual-use architecture is proposed offering both radar and communications capabilities on a common platform.
Steve C. Thompson, John P. Stralka
openaire   +1 more source

Two‐tone continuous‐wave Doppler radar based on envelope detection method

Microwave and Optical Technology Letters, 2020
AbstractA continuous‐wave (CW) Doppler radar using two‐tone frequencies is presented for the measurement of short‐range distance. The envelope detection method is proposed to discriminate each frequency signal in the output waveform of the two‐tone CW Doppler radar sensor.
Jae‐Hyun Park, Jong‐Ryul Yang
openaire   +1 more source

Target Recognition of Radar HRRP Using the Envelope Reconstruction

2017
In 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, Li Chan, Hongxi Zhou, Xiaguang Yu   +3 more
openaire   +1 more source

Reduction of Envelope Fluctuations in OFDM Radar Signals Using Coding Technique

2018 International Conference on Communication and Signal Processing (ICCSP), 2018
The 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, B.R. Prajwal, G.B. Druva Sagar, R. Keerthana, S. Meghna, N.N.S.S.R.K. Prasad   +5 more
openaire   +1 more source

MIMO radar sequence design with constant envelope and low correlation side-lobe levels

AEU - International Journal of Electronics and Communications, 2021
Abstract 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
openaire   +1 more source

Constant envelope robust waveform design for MIMO radar for parameter estimation

2017 IEEE 9th International Conference on Communication Software and Networks (ICCSN), 2017
In 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
openaire   +1 more source

Radar echo envelope extraction using Teager energy operator and wavelet transform

APCCAS 2008 - 2008 IEEE Asia Pacific Conference on Circuits and Systems, 2008
As 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, null Ruoyu Zhang, null Jiacai Hong, null Jing Sun   +3 more
openaire   +1 more source