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Related Concept Videos

Passive Filters01:27

Passive Filters

1.0K
Passive filters are utilized to shape the frequency spectrum of signals across a diverse array of applications. These filters, using only passive elements like resistors (R), inductors (L), and capacitors (C), are capable of selectively allowing or blocking certain frequency ranges without the need for external power sources.
Low-Pass Filters
Low-pass filters are designed to transmit signals with frequencies lower than the cutoff frequency, ωc, and attenuate those above it. The cutoff...
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Active Filters01:25

Active Filters

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Active filters are electronic circuits that use operational amplifiers (op-amps), resistors, and capacitors to filter out unwanted frequency components from a signal. A first-order low-pass active filter is designed to pass signals with a frequency lower than a certain cutoff frequency and attenuate frequencies higher than that cutoff frequency. The transfer function for a first-order low-pass active filter is:
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Random Error01:04

Random Error

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Random or indeterminate errors originate from various uncontrollable variables, such as variations in environmental conditions, instrument imperfections, or the inherent variability of the phenomena being measured. Usually, these errors cannot be predicted, estimated, or characterized because their direction and magnitude often vary in magnitude and direction even during consecutive measurements. As a result, they are difficult to eliminate. However, the aggregate effect of these errors can be...
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Random Variables01:09

Random Variables

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A random variable is a single numerical value that indicates the outcome of a procedure. The concept of random variables is fundamental to the probability theory and was introduced by a Russian mathematician, Pafnuty Chebyshev, in the mid-nineteenth century.
Uppercase letters such as X or Y denote a random variable. Lowercase letters like x or y denote the value of a random variable. If X is a random variable, then X is written in words, and x is given as a number.
For example, let X = the...
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Randomized Experiments01:13

Randomized Experiments

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The randomization process involves assigning study participants randomly to experimental or control groups based on their probability of being equally assigned. Randomization is meant to eliminate selection bias and balance known and unknown confounding factors so that the control group is similar to the treatment group as much as possible. A computer program and a random number generator can be used to assign participants to groups in a way that minimizes bias.
Simple randomization
Simple...
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Space Trusses01:25

Space Trusses

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A space truss is a three-dimensional counterpart of a planar truss. These structures consist of members connected at their ends, often utilizing ball-and-socket joints to create a stable and versatile framework. The space truss is widely used in various construction projects due to its adaptability and capacity to withstand complex loads.
At the core of a space truss lies the fundamental unit known as the tetrahedron. This structure is composed of six members that form a three-dimensional shape...
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Density Functional Theory Simulations of Water Adsorption and Activation on the (-201) β-Ga<sub>2</sub> O<sub>3</sub> Surface.

Chemistry (Weinheim an der Bergstrasse, Germany)·2018
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Updated: Feb 5, 2026

In Vitro Phagocytosis of Myelin Debris by Bone Marrow-Derived Macrophages
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Distributed Space Debris Tracking with Consensus Labeled Random Finite Set Filtering.

Baishen Wei1, Brett Nener2

  • 1School of Mechanical and Electric Engineering, Guangzhou University, Guangzhou 510006, China. baishen@gzhu.edu.cn.

Sensors (Basel, Switzerland)
|September 13, 2018
PubMed
Summary

Tracking space debris is crucial for spacecraft safety. This study introduces an advanced filtering technique for enhanced space debris tracking, improving space situational awareness despite sensor network uncertainties.

Keywords:
consensusdistributedmarginalized δ-GLMBspace debris

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Area of Science:

  • Aerospace Engineering
  • Signal Processing
  • Data Fusion

Background:

  • Increasing satellite numbers and space debris pose significant risks to spacecraft operations.
  • Accurate space situational awareness is vital for mission success and safety.

Purpose of the Study:

  • To investigate an efficient space debris tracking algorithm using a network of sensors.
  • To address challenges like detection uncertainty, data association, and clutter in space debris monitoring.

Main Methods:

  • Utilized marginalized δ-generalized labeled multi-Bernoulli filtering for space debris tracking.
  • Employed a consensus algorithm for iterative regional averaging in a sensor network with potentially unknown topology.

Main Results:

  • The proposed algorithm demonstrated effective space debris tracking capabilities.
  • Simulation results verified the algorithm's performance in handling complex tracking scenarios.

Conclusions:

  • The developed algorithm offers an efficient solution for space debris tracking.
  • This approach enhances space situational awareness by mitigating tracking uncertainties.