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Related Concept Videos

Field Application of Global Positioning System01:28

Field Application of Global Positioning System

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The Global Positioning System (GPS) has become an indispensable tool in fieldwork, offering unparalleled precision and efficiency for surveying, navigation, and infrastructure development. By harnessing signals from a constellation of satellites, GPS receivers determine the location of objects with remarkable speed and accuracy, often completing calculations within a second.Advantages of Modern GPS TechnologyContemporary GPS receivers are designed to meet the practical demands of field...
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Introduction to Global Positioning System01:30

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The Global Positioning System (GPS) revolutionized positioning on Earth, providing precise location data through satellite ranging. The GPS system was developed in 1978 by the U.S. Department of Defense  for military use, and it became available for civilian applications in 1983, transforming fields including navigation, fleet management, and time synchronization for telecommunications systems.GPS consists of satellites in medium Earth orbit, about 20,200 kilometers above the surface,...
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GPS surveying methods vary in application, accuracy, and data collection techniques, catering to diverse surveying and mapping needs. Static GPS, kinematic GPS, and real-time kinematic (RTK) surveying are widely used. Each technique offers distinct advantages.Static GPS involves placing one receiver at a known reference point and another at the target point. It collects exact positional data by observing multiple satellite ranges over an extended period, achieving centimeter-level accuracy for...
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Receiver Operating Characteristic Plot01:15

Receiver Operating Characteristic Plot

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A ROC (Receiver Operating Characteristic) plot is a graphical tool used to assess the performance of a binary classification model by illustrating the trade-off between sensitivity (true positive rate) and specificity (false positive rate). By plotting sensitivity against 1 - specificity across various threshold settings, the ROC curve shows how well the model distinguishes between classes, with a curve closer to the top-left corner indicating a more accurate model. The area under the ROC curve...
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Errors in Global Positioning System01:26

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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,...
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Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over short...
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Related Experiment Video

Updated: Jul 16, 2025

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A Fully Integrated Low-Power Multi-Mode RF Receiver for BDS-3/GPS.

Shalin Huang1, Jiang Li1, Mingdong Li1

  • 1School of Microelectronics and Communication Engineering, Chongqing University, Chongqing 401331, China.

Sensors (Basel, Switzerland)
|September 9, 2023
PubMed
Summary

This study presents a low-power, area-efficient receiver for Global Positioning System (GPS) and BeiDou Navigation Satellite System (BDS-3) signals. The integrated design achieves accurate localization with minimal power consumption and a small footprint.

Keywords:
BeiDou navigation satellite system-3 (BDS-3)RF receiverglobal positioning system (GPS)multi-mode receiver

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Area of Science:

  • Electrical Engineering
  • Satellite Navigation Systems
  • Integrated Circuit Design

Background:

  • Accurate satellite navigation is crucial for various applications.
  • Existing receivers often require bulky off-chip components, increasing cost and power consumption.
  • Need for compact, low-power receivers for Global Positioning System (GPS) and BeiDou Navigation Satellite System (BDS-3) L1 bands.

Purpose of the Study:

  • To present a fully integrated, low-power, area-efficient receiver.
  • To demonstrate accurate localization capabilities for BDS-3 and GPS L1 bands.
  • To achieve high performance without external low-noise amplifiers.

Main Methods:

  • Utilized a low-intermediate frequency (low-IF) topology.
  • Integrated digitally assisted calibration schemes: RC calibration, automatic gain control (AGC), and DC offset correction.
  • Fabricated the receiver using a standard 55 nm CMOS technology.

Main Results:

  • Achieved a maximum gain of 113.2 dB and a gain control range of 61 dB.
  • Minimum noise figure of 1.74 dB under a 1.2 V supply.
  • Power consumption of 8.7 mA (with synthesizer) and 4.8 mA (without), with areas of 0.73 mm² and 0.345 mm², respectively.

Conclusions:

  • The integrated low-IF receiver offers a compelling solution for space-constrained and power-sensitive navigation applications.
  • The design effectively mitigates process, voltage, and temperature (PVT) variations through integrated calibration.
  • Demonstrated high performance in terms of gain, noise figure, power efficiency, and area.