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

Adjusting a Traverse01:12

Adjusting a Traverse

94
In the site survey of a four-sided traverse, internal angles are essential to ensure geometric accuracy. The survey revealed that the sum of the measured internal angles was 359 degrees and 48 minutes, which is 12 minutes less than the expected 360 degrees. This discrepancy signals an error likely arising from measurement inaccuracies during the fieldwork.To rectify this error, the adjustment process involved distributing the 12-minute shortfall equally across the four internal angles. By...
94
Common Leveling Mistakes and Errors01:17

Common Leveling Mistakes and Errors

111
A survey team is tasked with determining the elevation difference between points Point A and Point B, separated by uneven terrain. They use a leveling instrument and a leveling rod.Common MistakesMisreading the Rod: During a backsight reading at Point A, the instrumentman observes the rod partially obscured by tall grass. Instead of reading 1.135 m, they mistakenly record 1.735 m due to the misalignment of the crosshair with the wrong graduation. This error adds 0.600 m to all subsequent...
111
Influence of Earth's Curvature and Atmospheric Refraction on Leveling01:26

Influence of Earth's Curvature and Atmospheric Refraction on Leveling

219
During leveling, the Earth's curvature and atmospheric refraction introduce deviations in the line of sight from a true horizontal reference. When the line of sight is leveled, it remains perpendicular to the plumb line only at a single point. Beyond this, it deviates due to the Earth’s curvature, represented by the correction C. For a sight distance D, the deviation can be derived using the relationship:This relationship shows that the deviation increases quadratically with distance.
219
Distance Corrections01:15

Distance Corrections

62
To achieve precise distance measurements, especially in surveying and construction, certain corrections must be applied to account for potential sources of error like the standardization errors, temperature variations, and slope adjustments.Standardization error emerges when measurement equipment undergoes changes, such as wear, repairs, or weather impacts. To address this, surveyors compare the equipment’s readings to a standard. This process identifies any deviation that might lead to...
62
Errors in Taping01:18

Errors in Taping

60
Errors in taping arise from multiple factors that can significantly impact measurement accuracy in surveying. Misalignment of the tape, often due to human error, is one primary source. A skilled rear tapeman, using a telescope, can help correct alignment by guiding the head tapeman; however, human limitations still lead to small inaccuracies. These errors may include misplacement of pins or inaccurate tape readings due to common visual confusions, such as mistaking a six for a nine. Such...
60
Errors in Global Positioning System01:26

Errors in Global Positioning System

95
Global Positioning System (GPS) technology has revolutionized navigation and positioning, but its accuracy is often compromised by various errors. These errors, stemming from environmental, satellite, and receiver-related factors, require careful mitigation to ensure reliable performance across applications.Atmospheric ErrorsGPS signals travel through the Earth’s ionosphere and troposphere, introducing delays which affect accuracy. The ionosphere is strongly influenced by charged particles,...
95

You might also read

Related Articles

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

Sort by
Same author

Serum syndecan-1 correlates with coronary artery calcification severity and intradialytic hypotension in elderly hemodialysis patients.

Frontiers in cardiovascular medicine·2026
Same author

A 53-Year-Old Woman with Ear Pain and Facial Weakness.

NEJM evidence·2026
Same author

Deciphering of chemical constituents of Wuling Powder and its tissue distribution metabolic characteristics on renal ischemia-reperfusion injury rat model via UHPLC-Q-TOF-MS/MS technology.

Journal of ethnopharmacology·2026
Same author

Association between a novel obesity index WWI and chronic kidney disease in a Chinese middle-aged and older population: a national prospective cohort study.

Scientific reports·2026
Same author

Calibration and enhancement of an intensity-coded NIR laser single-photon system for quantitative methane leak monitoring.

Optics express·2026
Same author

Divergent C-H Alkylation and Allylation of Indoles with Unactivated Alkene via Mechanochemical Rh(III) Catalysis.

Organic letters·2026

Related Experiment Video

Updated: Aug 25, 2025

Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform
06:25

Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform

Published on: February 12, 2014

8.5K

Iterative correction method of a retrace error in interferometry.

Chenhui Hu, Lei Chen, Donghui Zheng

    Optics Express
    |October 19, 2022
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces an iterative method to correct retrace errors in interferometer measurements. The technique effectively reduces phase measurement inaccuracies caused by inconsistent optical paths, improving measurement precision.

    More Related Videos

    The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
    12:14

    The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

    Published on: August 12, 2013

    21.9K
    Three-dimensional Super Resolution Microscopy of F-actin Filaments by Interferometric PhotoActivated Localization Microscopy iPALM
    11:57

    Three-dimensional Super Resolution Microscopy of F-actin Filaments by Interferometric PhotoActivated Localization Microscopy iPALM

    Published on: December 1, 2016

    10.8K

    Related Experiment Videos

    Last Updated: Aug 25, 2025

    Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform
    06:25

    Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform

    Published on: February 12, 2014

    8.5K
    The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
    12:14

    The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

    Published on: August 12, 2013

    21.9K
    Three-dimensional Super Resolution Microscopy of F-actin Filaments by Interferometric PhotoActivated Localization Microscopy iPALM
    11:57

    Three-dimensional Super Resolution Microscopy of F-actin Filaments by Interferometric PhotoActivated Localization Microscopy iPALM

    Published on: December 1, 2016

    10.8K

    Area of Science:

    • Optical Engineering
    • Metrology

    Background:

    • Interferometer measurements are susceptible to retrace errors.
    • Optical path inconsistencies between reference and test lights cause phase measurement inaccuracies.

    Purpose of the Study:

    • To propose and validate an iterative retrace error correction method for interferometry.
    • To enhance the precision of phase measurements in optical testing.

    Main Methods:

    • Established a black-box model linking retrace error to surface tilt.
    • Utilized the least-squares method to determine error correction phase.
    • Iteratively corrected retrace error using global tilt determination.

    Main Results:

    • Achieved root mean square (RMS) residuals below 3.2 × 10-5λ in simulations.
    • Demonstrated effective retrace error correction for planar measurements (>6.4 × 10-3λ).
    • Showcased successful correction for spherical measurements (>1.4 × 10-3λ).

    Conclusions:

    • The proposed iterative method effectively corrects retrace errors in interferometry.
    • This technique significantly improves the accuracy of phase measurements.
    • Validated through simulations and experimental planar and spherical measurements.