Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Reconstruction of Signal using Interpolation01:10

Reconstruction of Signal using Interpolation

608
Signal processing techniques are essential for accurately converting continuous signals to digital formats and vice versa. When a continuous signal is sampled with a period T, the resulting sampled signal exhibits replicas of the original spectrum in the frequency domain, spaced at intervals equal to the sampling frequency. To handle this sampled signal, a zero-order hold method can be applied, which creates a piecewise constant signal by retaining each sample's value until the next...
608
Beams with Symmetric Loadings01:15

Beams with Symmetric Loadings

341
The moment-area method is an analytical tool used in structural engineering to determine the slope and deflection of beams under various loads. Consider a cantilever with a concentrated load and moment at the free end. The first step is constructing a free-body diagram to calculate the reactions at the fixed end. Next, the bending moment diagram is plotted to visualize how the bending moment varies along the beam's length, focusing on points where the bending moment equals zero.
The M/EI...
341
Blind Procedures02:07

Blind Procedures

12.7K
Ideally, the people who observe and record the children’s behavior are unaware of who was assigned to the experimental or control group, in order to control for experimenter bias. Experimenter bias refers to the possibility that a researcher’s expectations might skew the results of the study. Remember, conducting an experiment requires a lot of planning, and the people involved in the research project have a vested interest in supporting their hypotheses. If the observers knew which...
12.7K
Beams with Unsymmetric Loadings01:17

Beams with Unsymmetric Loadings

321
Analyzing a supported beam under unsymmetrical loadings is essential in structural engineering to understand how beams respond to varied force distributions. This analysis involves calculating the deflection and identifying points where the slope of the beam is zero, which are crucial for ensuring structural stability and functionality.
The first moment-area theorem determines the slope at any point on the beam. This theorem indicates that the change in slope between two points on a beam...
321
Vector Algebra: Method of Components01:08

Vector Algebra: Method of Components

18.5K
It is cumbersome to find the magnitudes of vectors using the parallelogram rule or using the graphical method to perform mathematical operations like addition, subtraction, and multiplication. There are two ways to circumvent this algebraic complexity. One way is to draw the vectors to scale, as in navigation, and read approximate vector lengths and angles (directions) from the graphs. The other way is to use the method of components.
In many applications, the magnitudes and directions of...
18.5K
Scalar and Vector Triple Products01:06

Scalar and Vector Triple Products

4.1K
Two vectors can be multiplied using a scalar product or a vector product. The resultant of a scalar product is scalar, while with vector products, the resultant is a vector. These rules of the scalar or vector product between two vectors can be applied to multiple vectors to obtain meaningful combinations. The scalar triple product is the dot product of a vector with the cross product of two vectors.
The scalar triple product is the dot product of a vector with the cross product of two vectors....
4.1K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Association between cellular characteristics and clinical outcomes following autologous micro-fragmented adipose tissue injection for knee osteoarthritis.

Frontiers in bioengineering and biotechnology·2026
Same author

Robot-assisted minimally invasive surgery for complex calcaneal fractures: a case report.

BMC musculoskeletal disorders·2026
Same author

Multidimensional comparison of robot-assisted/manual THA: a systematic review and meta-analysis using REML-HK and multi-model for key outcomes.

Hip international : the journal of clinical and experimental research on hip pathology and therapy·2026
Same author

Sagittal parameters after primary TKA affecting knee joint function: a correlative analysis and predictive model construction.

Journal of orthopaedic surgery and research·2026
Same author

Abnormal mechanical stress due to excessive femoral torsion is associated with dysplasia of the distal femoral epiphyseal plate and trochlea.

Bone & joint research·2025
Same author

Comparison of direct anterior vs. posterior approach in primary total hip arthroplasty: a systematic review and meta-analysis on enhanced recovery after surgery.

Frontiers in surgery·2025

Related Experiment Video

Updated: Dec 15, 2025

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
10:39

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating

Published on: October 11, 2016

10.0K

Doubly Covariance Matrix Reconstruction Based Blind Beamforming for Coherent Signals.

Zhuang Xie1, Chongyi Fan1, Jiahua Zhu2

  • 1College of Electronic Science and Technology, National University of Defense Technology, Changsha 410073, China.

Sensors (Basel, Switzerland)
|July 8, 2020
PubMed
Summary

This study introduces a novel beamforming method for coherent multipath environments, eliminating the need for direction of arrival estimation. The technique enhances signal processing by reconstructing interference matrices and estimating composite steering vectors for improved performance.

Keywords:
blind beamformingcomposite steering vectorinterference-plus-noise covariance matrixmultipath arrivals

More Related Videos

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
09:43

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

10.2K
Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
08:39

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

10.2K

Related Experiment Videos

Last Updated: Dec 15, 2025

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
10:39

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating

Published on: October 11, 2016

10.0K
Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
09:43

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

10.2K
Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
08:39

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

10.2K

Area of Science:

  • Signal Processing
  • Array Signal Processing
  • Wireless Communications

Background:

  • Coherent multipath propagation significantly degrades array processing performance.
  • Traditional beamforming methods often require prior knowledge of signal directions of arrival (DOAs).
  • Existing techniques may suffer from reduced degrees of freedom or spatial smoothing.

Discussion:

  • This paper presents a novel beamforming approach robust to coherent multipath arrivals.
  • The method reconstructs the interference-plus-noise covariance matrix (INCM) using a doubly covariance matrix reconstruction.
  • It estimates the composite steering vector (CSV) without explicit DOA estimation, accounting for direct and multipath signals.

Key Insights:

  • The proposed beamforming method effectively handles coherent multipath without DOA estimation.
  • It avoids spatial smoothing and preserves the array's degrees of freedom.
  • Simulation results validate superior performance compared to conventional methods.

Outlook:

  • This technique offers a promising solution for robust array signal processing in challenging multipath scenarios.
  • Further research could explore adaptive implementations and applications in different wireless systems.
  • Potential for improved performance in mobile communications and radar systems.