TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

OPPORTUNITY SIGNAL [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2021-11-30

English

Subject field(s)
  • Telecommunications
  • Radioelectricity
  • Internet and Telematics
CONT

[Global navigation satellite system(GNSS) ] positioning is affected by various measurement errors, such as ionospheric delay, tropospheric delay, and multipath effect. In addition, the GNSS signal is weak[;] it comes from 20, 000 to 30, 000 km away and is vulnerable to unintentional radio frequency interference or malicious interference(jamming and spoofing)... Therefore, it is of great significance to enhance the reliability and positioning accuracy of GNSS by other means... Many studies consider using signals of opportunity(SOP) for positioning when GNSS is unavailable or unreliable. These SOP include digital television[, ] Bluetooth[, low earth orbit(LEO), ] Wi-Fi[, ] vision[, ] 5 G [(fifth generation), ] and so on.

OBS

opportunity signal; signal of opportunity : designations usually used in the plural.

Key term(s)
  • opportunity signals
  • signals of opportunity

French

Domaine(s)
  • Télécommunications
  • Radioélectricité
  • Internet et télématique
OBS

signal d'opportunité : désignation habituellement utilisée au pluriel.

Key term(s)
  • signaux d'opportunité

Spanish

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Record 2 2002-11-13

English

Subject field(s)
  • Range Measurements (Telecommunications)
  • Radio Waves
CONT

Theoretical studies have shown the potential scientific value of multi-spacecraft radio tomographic imaging of the magnetosphere. The <10 RE WIND perigee passes during August 2000 afforded a unique opportunity to test and verify the capabilities of radio tomography by measuring interspacecraft electromagnetic wave propagation parameters using the Radio Plasma Imager(RPI) on IMAGE as the transmitter and the WAVES instrument on WIND as the receiver.... We show how changes in the path-integrated electron density/magnetic field product can be unambiguously measured from this continuous, low signal to noise ratio, single frequency measurement.

French

Domaine(s)
  • Mesures à distance (Télécommunications)
  • Ondes radioélectriques

Spanish

Save record 2

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