Add sat:acquisition_station field and update dependencies

Author: emmanuelmathot

.github/remark.yaml

@@ -43,4 +43,4 @@ plugins:
     - space
 # Tables
   - remark-lint-table-pipes
-  - remark-lint-no-literal-urls
+  - remark-lint-no-literal-urls

README.md

@@ -21,15 +21,16 @@ It will often be combined with other extensions that describe the actual data, s
 
 ## Item Properties
 
-| Field Name                            | Type                  | Description                                                                                                                                                                                             |
-| ------------------------------------- | --------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
-| sat:platform_international_designator | string                | The International Designator, also known as COSPAR ID, and NSSDCA ID                                                                                                                                    |
-| sat:orbit_state                       | string                | The state of the orbit. Either `ascending` or `descending` for polar orbiting satellites, or `geostationary` for geosynchronous satellites                                                              |
-| sat:absolute_orbit                    | integer               | The absolute orbit number at the time of acquisition.                                                                                                                                                   |
-| sat:relative_orbit                    | integer               | The relative orbit number at the time of acquisition.                                                                                                                                                   |
-| sat:orbit_cycle                       | integer               | The number of repeat cycle done by the satellite at the time of the acquisition. [Repeat cycle](https://ltb.itc.utwente.nl/page/498/concept/81577) is the time between two successive identical orbits. |
-| sat:orbit_state_vectors               | Map<string, \[number]> | The state vectors of the satellite at the time of acquisition.                                                                                                                                         |
-| sat:anx_datetime                      | string                | The [Ascending Node](https://en.wikipedia.org/wiki/Orbital_node) Crossing (ANX) time, in UTC. It is formatted according to [RFC 3339, section 5.6](https://tools.ietf.org/html/rfc3339#section-5.6).    |
+| Field Name                            | Type                   | Description                                                                                                                                                                                             |
+| ------------------------------------- | ---------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| sat:platform_international_designator | string                 | The International Designator, also known as COSPAR ID, and NSSDCA ID                                                                                                                                    |
+| sat:orbit_state                       | string                 | The state of the orbit. Either `ascending` or `descending` for polar orbiting satellites, or `geostationary` for geosynchronous satellites                                                              |
+| sat:absolute_orbit                    | integer                | The absolute orbit number at the time of acquisition.                                                                                                                                                   |
+| sat:relative_orbit                    | integer                | The relative orbit number at the time of acquisition.                                                                                                                                                   |
+| sat:orbit_cycle                       | integer                | The number of repeat cycle done by the satellite at the time of the acquisition. [Repeat cycle](https://ltb.itc.utwente.nl/page/498/concept/81577) is the time between two successive identical orbits. |
+| sat:orbit_state_vectors               | Map<string, \[number]> | The state vectors of the satellite at the time of acquisition.                                                                                                                                          |
+| sat:anx_datetime                      | string                 | The [Ascending Node](https://en.wikipedia.org/wiki/Orbital_node) Crossing (ANX) time, in UTC. It is formatted according to [RFC 3339, section 5.6](https://tools.ietf.org/html/rfc3339#section-5.6).    |
+| sat:acquisition_station               | string                 | The acquisition station (ground station) where the satellite data was downlinked. Equivalent to `eop:acquisition_station` in OGC 10-157r4 and OGC 17-003r2.                                             |
 
 *At least one of the fields must be specified.*
 
@@ -120,6 +121,13 @@ Example:
 It is recommended that the state vectors are provided in a separate file and referenced as a link with relationship type `sat:osv`.
 The file should correspond to the example above.
 
+#### sat:acquisition_station
+
+The ground station where the satellite data was downlinked. This information is crucial for data lineage and provenance tracking, 
+as it identifies the first point of data reception on Earth. In the context of Earth Observation missions, this corresponds to the 
+`eop:acquisitionStation` in OGC standards (10-157r4 and 17-003r2). This field can be used for filtering datasets based on the 
+ground station used for downlinking, which can be relevant for certain processing workflows or quality assessments.
+
 ## Relation types
 
 The following types should be used as applicable `rel` types in the

examples/example-landsat8.json

@@ -51,6 +51,7 @@
     ],
     "constellation": "landsat",
     "sat:orbit_state": "ascending",
+    "sat:acquisition_station": "LGS",
     "view:off_nadir": 0
   },
   "assets": {

examples/example-sentinel1.json

@@ -81,6 +81,7 @@
         -5604.210861145829
       ]
     },
+    "sat:acquisition_station": "PDGS Matera",
     "sar:instrument_mode": "IW",
     "sar:polarizations": [
       "VV",

json-schema/schema.json

@@ -66,6 +66,11 @@
                   "required": [
                     "sat:orbit_state_vectors"
                   ]
+                },
+                {
+                  "required": [
+                    "sat:acquisition_station"
+                  ]
                 }
               ]
             },
@@ -153,6 +158,9 @@
             }
           },
           "additionalProperties": false
+        },
+        "sat:acquisition_station": {
+          "type": "string"
         }
       },
       "patternProperties": {

package.json

@@ -18,4 +18,4 @@
     "remark-validate-links": "^13.0.0",
     "stac-node-validator": "^1.3.0"
   }
-}
+}