LRR
type: Dataset
spatial: Location
  bbox: POLYGON((-180 -90,-180 90,180 90,180 -90,-180 -90))
qualified relation: Root as JSON-LD (GeoDCAT-AP)
  type: Relationship
  relation: https://fedeo.ceos.org
  format: application/ld+json
  had role: https://stacspec.org/def/rel/iana/1.0/root
qualified relation: Self as JSON-LD (GeoDCAT-AP)
  type: Relationship
  relation: https://fedeo.ceos.org/series/concepts/instruments/30b71461-2c95-5673-a98a-d05e0489d48c
  format: application/ld+json
  had role: http://www.iana.org/assignments/relation/self
qualified relation: Parent as JSON-LD (GeoDCAT-AP)
  type: Relationship
  relation: https://fedeo.ceos.org/series/concepts/instruments/b092eeb4-5408-5499-99bd-7fabf92e1f8f
  format: application/ld+json
  had role: https://stacspec.org/def/rel/iana/1.0/parent
qualified relation: Swarm Core (0)
  type: Relationship
  relation: https://fedeo.ceos.org/series/concepts/instruments/30b71461-2c95-5673-a98a-d05e0489d48c/Swarm.Core
  format: application/ld+json
  had role: https://stacspec.org/def/rel/iana/1.0/child
qualified relation: Swarm Geodesy/Gravity (0)
  type: Relationship
  relation: https://fedeo.ceos.org/series/concepts/instruments/30b71461-2c95-5673-a98a-d05e0489d48c/Swarm.Geodesy_Gravity
  format: application/ld+json
  had role: https://stacspec.org/def/rel/iana/1.0/child
qualified relation: Swarm Ionosphere/Magnetosphere (0)
  type: Relationship
  relation: https://fedeo.ceos.org/series/concepts/instruments/30b71461-2c95-5673-a98a-d05e0489d48c/Swarm.Ionosphere_Magnetosphere
  format: application/ld+json
  had role: https://stacspec.org/def/rel/iana/1.0/child
qualified relation: Swarm Level 1B (0)
  type: Relationship
  relation: https://fedeo.ceos.org/series/concepts/instruments/30b71461-2c95-5673-a98a-d05e0489d48c/Swarm.L1B
  format: application/ld+json
  had role: https://stacspec.org/def/rel/iana/1.0/child
qualified relation: Swarm Level 2 daily (0)
  type: Relationship
  relation: https://fedeo.ceos.org/series/concepts/instruments/30b71461-2c95-5673-a98a-d05e0489d48c/Swarm.L2.daily
  format: application/ld+json
  had role: https://stacspec.org/def/rel/iana/1.0/child
qualified relation: Swarm Level 2 longterm (0)
  type: Relationship
  relation: https://fedeo.ceos.org/series/concepts/instruments/30b71461-2c95-5673-a98a-d05e0489d48c/Swarm.L2.longterm
  format: application/ld+json
  had role: https://stacspec.org/def/rel/iana/1.0/child
qualified relation: Swarm Lithosphere (0)
  type: Relationship
  relation: https://fedeo.ceos.org/series/concepts/instruments/30b71461-2c95-5673-a98a-d05e0489d48c/Swarm.Lithosphere
  format: application/ld+json
  had role: https://stacspec.org/def/rel/iana/1.0/child
qualified relation: Swarm Mantle (0)
  type: Relationship
  relation: https://fedeo.ceos.org/series/concepts/instruments/30b71461-2c95-5673-a98a-d05e0489d48c/Swarm.Mantle
  format: application/ld+json
  had role: https://stacspec.org/def/rel/iana/1.0/child
qualified relation: Swarm Oceans (0)
  type: Relationship
  relation: https://fedeo.ceos.org/series/concepts/instruments/30b71461-2c95-5673-a98a-d05e0489d48c/Swarm.Oceans
  format: application/ld+json
  had role: https://stacspec.org/def/rel/iana/1.0/child
qualified relation: Swarm Space Weather (0)
  type: Relationship
  relation: https://fedeo.ceos.org/series/concepts/instruments/30b71461-2c95-5673-a98a-d05e0489d48c/Swarm.Space.Weather
  format: application/ld+json
  had role: https://stacspec.org/def/rel/iana/1.0/child
qualified relation: Swarm Thermosphere (0)
  type: Relationship
  relation: https://fedeo.ceos.org/series/concepts/instruments/30b71461-2c95-5673-a98a-d05e0489d48c/Swarm.Thermosphere
  format: application/ld+json
  had role: https://stacspec.org/def/rel/iana/1.0/child
qualified relation: Landing Page in JSON media type.
  type: Relationship
  relation: https://fedeo.ceos.org
  format: application/json
  had role: http://www.iana.org/assignments/relation/alternate
description: Precise orbit determination relies on the data from the GPS receivers providing full global coverage of orbit data. The alternative method of Satellite Laser Ranging (SLR) is used as a supporting and independent means for orbit determination. Its limitation is the rather poor global and temporal coverage, but the SLR data is free from ambiguities and directly related to the terrestrial reference frame. Each of the Swarm satellites is equipped with a Laser Retro-Reflector (LRR) of novel design for external calibration and validation of the onboard GPS receiver. A basic requirement for LRR is to enable the worldwide SLR station network to track the satellite with high accuracy and with a sufficiently high link budget under both night and daytime ranging conditions.
qualified attribution: Attribution
  agent: Organization
    has name: FedEO
    has URL: https://fedeo.ceos.org/readme.html
license: various