page_title: Choke ring antenna
hierarchical_section_title: Choke ring antenna
caption_attribution_description: Deutsch: Eine DGPS-Referenzstation auf dem Dach des Landesamts für Vermessung und Geobasisinformation Rheinland-Pfalz (LVermGeo RP). Das LVermGeo RP ist für das Gebiet von Rheinland-Pfalz Betreiber des Satellitenpositionierungsdienstes der Deutschen Landesvermessung (SAPOS). Español: Estación de referencia DGPS English: DGPS Reference Station
context_page_description: A choke ring antenna is a particular form of omnidirectional antenna for use at high frequencies. It consists of a number of conductive concentric cylinders around a central antenna. Due to its delicate construction, it is often enclosed in a protective cover or radome when placed outside and exposed to the elements.
  Choke ring antennas are notable for their ability to reject multipath signals from a source. Since the path that a signal takes from a transmitter to receiver can be used to measure the distance between the two, this makes it highly suited for GPS and radar applications. In a GPS ground-based receiver, a choke ring antenna can provide millimeter precision measurements for surveying and geological measurement applications.
  The choke ring design originated at the Jet Propulsion Laboratory.
context_section_description: A choke ring antenna is a particular form of omnidirectional antenna for use at high frequencies.  It consists of a number of conductive concentric cylinders around a central antenna.  Due to its delicate construction, it is often enclosed in a protective cover or radome when placed outside and exposed to the elements.  
  Choke ring antennas are notable for their ability to reject multipath signals from a source.  Since the path that a signal takes from a transmitter to receiver can be used to measure the distance between the two, this makes it highly suited for GPS and radar applications.  In a GPS ground-based receiver, a choke ring antenna can provide millimeter precision measurements for surveying and geological measurement applications.
  The choke ring design originated at the Jet Propulsion Laboratory.
caption: Choke ring antenna at a DGPS Reference Station
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