17 papers · ranked by Valyu relevance
Adam Whipple, Mark W. Ruzindana, Mitchell C. Burnett, Jakob W. Kunzler + 3 more
'Jakob W. Kunzler' 'Kayla Lyman' 'Brian D. Jeffs' 'Karl F. Warnick'] Wideband beamforming and interference cancellation for phased array antennas requires advances in signal processing algorithms, software, and specialized hardware platforms. A high-throughput array receiver has been developed that enables…
Jialu Huang, Hong Ma, Jiang Jin, Hua Zhang
Recently, nonlinear blind compensation technique has attracted growing attention in array signal processing application. However, due to the nonlinear distortion stemming from array receiver which consists of multi-channel radio frequency (RF) front-ends, it is too difficult to estimate the parameters of array signal…
Duo Zhang, Wen Wu, Dagang Fang, Wenqin Wang + 4 more
'Yujie Gu' 'Rongxing Lu'] In modern communication and radar applications, large-scale sensor arrays have increasingly been used to improve the performance of a system. However, the hardware cost and circuit power consumption scale linearly with the number of sensors, which makes the whole system expensive and…
Na Wu, Zhiyu Qu, Weijian Si, Shuhong Jiao + 1 more
In array signal processing systems, the direction of arrival (DOA) and polarization of signals based on uniform linear or rectangular sensor arrays are generally obtained by rotational invariance techniques (ESPRIT). However, since the ESPRIT algorithm relies on the rotational invariant structure of the received data…
Krutant J. Mehta, Inder J. Gupta, Stefano Savazzi
In this paper, we establish criteria for the design of small aperture antenna arrays for Direction of Arrival (DOA) estimation. We define a small aperture antenna array as one consisting of a few elements with an average interelement spacing less than or equal to half a wavelength. We use the spatial covariance matrix…
Jie Wang, Shujuan Ding, Na Wei, Jinzhi Bi + 2 more
To suppress non-stationary main-lobe interference, we utilized the waveform information of the transmitted signal and proposed an interference suppression method based on a multi-polarized array without the need for calculating the target parameters. This method calculates the steering vector of the target through…
Muhammad Asif, Xiangzhou Guo, Jing Zhang, Jungang Miao
Digital cross-correlation is central to many applications including but not limited to Digital Image Processing, Satellite Navigation and Remote Sensing. With recent advancements in digital technology, the computational demands of such applications have increased enormously. In this paper we are presenting a high…
Dragan Golubović, Miljko Erić, Nenad Vukmirović, Akanksha Bhutani + 1 more
'Mario Pauli'] In this paper, we present a new high-resolution algorithm for primary signal processing in High Frequency Surface Wave Radar (HFSWR). The algorithm has been developed to achieve and improve primary signal processing performance in existing HFSWR radars in terms of radar target detection. The proposed…
Byoung-Gyun Lim, Jea-Choon Woo, Hee-Young Lee, Young-Soo Kim
Synthetic wideband waveforms (SWW) combine a stepped frequency CW waveform and a chirp signal waveform to achieve high range resolution without requiring a large bandwidth or the consequent very high sampling rate. If an efficient algorithm like the range-Doppler algorithm (RDA) is used to acquire the SAR images for…
Evgeny Gennadievich Bazulin
The use of linear methods, for example, the Combined Synthetic Aperture Focusing Technique (C-SAFT), does not allow one to obtain images with high resolution and low noise, especially structural noise in all cases. Non-linear methods should improve the quality of the reconstructed image. Several examples of the…
Shiyu Wang, Shengbing Zhang, Xiaoping Huang, Jianfeng An + 1 more
'Libo Chang'] The expansion and improvement of synthetic aperture radar (SAR) technology have greatly enhanced its practicality. SAR imaging requires real-time processing with limited power consumption for large input images. Designing a specific heterogeneous array processor is an effective approach to meet the power…
Chanhee Bae, Seongjoo Lee, Yunho Jung, Ali Khenchaf
This paper proposes a high-speed continuous wavelet transform (CWT) processor to analyze vital signals extracted from a frequency-modulated continuous wave (FMCW) radar sensor. The proposed CWT processor consists of a fast Fourier transform (FFT) module, complex multiplier module, and inverse FFT (IFFT) module. For…
Brian M Sadler, Sebastian Hoyos
The conventional analog-to-digital conversion (ADC) and digital signal processing (DSP) architecture has led to major advances in miniature and micro-systems technology over the past several decades. The outlook for these systems is significantly enhanced by advances in sensing, signal processing, communications and…
Xuzhao Yang, Hui Tian, Fan Wang, Jinping Ni + 2 more
'Michele Norgia'] The Laser Light Screen System faces critical technical challenges in high-speed, long-range target detection: when a target passes through the light screen, weak light flux variations lead to significantly degraded signal-to-noise ratios (SNRs). Traditional signal processing algorithms fail to…
Bingyi Li, Hao Shi, Liang Chen, Wenyue Yu + 5 more
'Mingming Bian' 'Qingjun Zhang' 'Long Pang'] With the development of satellite load technology and very large-scale integrated (VLSI) circuit technology, on-board real-time synthetic aperture radar (SAR) imaging systems have facilitated rapid response to disasters. A key goal of the on-board SAR imaging system design…
Lukas P. A. Arts, Egon. L. van den Broek
The spectral analysis of signals is currently either dominated by the speed-accuracy trade-off or ignores a signal’s often non-stationary character. Here we introduce an open-source algorithm to calculate the fast continuous wavelet transform (fCWT). The parallel environment of fCWT separates scale-independent and…
Jaehyeon Lee, Dongmin Jeong, Seongwook Lee, Myeongjin Lee + 3 more
'Wookyung Lee' 'Yunho Jung' 'Mateusz Malanowski'] Synthetic aperture radar (SAR), which can generate images of regions or objects, is an important research area of radar. The chirp scaling algorithm (CSA) is a representative SAR imaging algorithm. The CSA has a simple structure comprising phase compensation and fast…