Adds XBTs to schedule and expedition

src/virtualship/expedition/do_expedition.py

@@ -168,6 +168,7 @@ def _load_input_data(
         load_argo_float=ship_config.argo_float_config is not None,
         load_ctd=ship_config.ctd_config is not None,
         load_drifter=ship_config.drifter_config is not None,
+        load_xbt=ship_config.xbt_config is not None,
         load_ship_underwater_st=ship_config.ship_underwater_st_config is not None,
     )
 

src/virtualship/expedition/input_data.py

@@ -16,6 +16,7 @@ class InputData:
     argo_float_fieldset: FieldSet | None
     ctd_fieldset: FieldSet | None
     drifter_fieldset: FieldSet | None
+    xbt_fieldset: FieldSet | None
     ship_underwater_st_fieldset: FieldSet | None
 
     @classmethod
@@ -26,6 +27,7 @@ def load(
         load_argo_float: bool,
         load_ctd: bool,
         load_drifter: bool,
+        load_xbt: bool,
         load_ship_underwater_st: bool,
     ) -> InputData:
         """
@@ -49,7 +51,7 @@ def load(
             argo_float_fieldset = cls._load_argo_float_fieldset(directory)
         else:
             argo_float_fieldset = None
-        if load_adcp or load_ctd or load_ship_underwater_st:
+        if load_adcp or load_ctd or load_ship_underwater_st or load_xbt:
             default_fieldset = cls._load_default_fieldset(directory)
         if load_adcp:
             adcp_fieldset = default_fieldset
@@ -63,12 +65,17 @@ def load(
             ship_underwater_st_fieldset = default_fieldset
         else:
             ship_underwater_st_fieldset = None
+        if load_xbt:
+            xbt_fieldset = default_fieldset
+        else:
+            xbt_fieldset = None
 
         return InputData(
             adcp_fieldset=adcp_fieldset,
             argo_float_fieldset=argo_float_fieldset,
             ctd_fieldset=ctd_fieldset,
             drifter_fieldset=drifter_fieldset,
+            xbt_fieldset=xbt_fieldset,
             ship_underwater_st_fieldset=ship_underwater_st_fieldset,
         )
 

src/virtualship/expedition/instrument_type.py

@@ -9,3 +9,4 @@ class InstrumentType(Enum):
     CTD = "CTD"
     DRIFTER = "DRIFTER"
     ARGO_FLOAT = "ARGO_FLOAT"
+    XBT = "XBT"

src/virtualship/expedition/ship_config.py

@@ -89,6 +89,15 @@ def _serialize_lifetime(self, value: timedelta, _info):
         return value.total_seconds() / 60.0
 
 
+class XBTConfig(pydantic.BaseModel):
+    """Configuration for xbt instrument."""
+
+    min_depth_meter: float = pydantic.Field(le=0.0)
+    max_depth_meter: float = pydantic.Field(le=0.0)
+    fall_speed_meter_per_second: float = pydantic.Field(gt=0.0)
+    deceleration_coefficient: float = pydantic.Field(gt=0.0)
+
+
 class ShipConfig(pydantic.BaseModel):
     """Configuration of the virtual ship."""
 
@@ -132,6 +141,13 @@ class ShipConfig(pydantic.BaseModel):
     If None, no drifters can be deployed.
     """
 
+    xbt_config: XBTConfig | None = None
+    """
+    XBT configuration.
+
+    If None, no XBTs can be cast.
+    """
+
     model_config = pydantic.ConfigDict(extra="forbid")
 
     def to_yaml(self, file_path: str | Path) -> None:

src/virtualship/expedition/simulate_measurements.py

@@ -8,6 +8,7 @@
 from ..instruments.ctd import simulate_ctd
 from ..instruments.drifter import simulate_drifters
 from ..instruments.ship_underwater_st import simulate_ship_underwater_st
+from ..instruments.xbt import simulate_xbt
 from .input_data import InputData
 from .ship_config import ShipConfig
 from .simulate_schedule import MeasurementsToSimulate
@@ -102,3 +103,16 @@ def simulate_measurements(
             outputdt=timedelta(minutes=5),
             endtime=None,
         )
+
+    if len(measurements.xbts) > 0:
+        print("Simulating XBTs")
+        if ship_config.xbt_config is None:
+            raise RuntimeError("No configuration for XBTs provided.")
+        if input_data.xbt_fieldset is None:
+            raise RuntimeError("No fieldset for XBTs provided.")
+        simulate_xbt(
+            out_path=expedition_dir.joinpath("results", "xbts.zarr"),
+            fieldset=input_data.xbt_fieldset,
+            xbts=measurements.xbts,
+            outputdt=timedelta(seconds=1),
+        )

src/virtualship/expedition/simulate_schedule.py

@@ -10,6 +10,7 @@
 from ..instruments.argo_float import ArgoFloat
 from ..instruments.ctd import CTD
 from ..instruments.drifter import Drifter
+from ..instruments.xbt import XBT
 from ..location import Location
 from ..spacetime import Spacetime
 from .instrument_type import InstrumentType
@@ -43,6 +44,7 @@ class MeasurementsToSimulate:
     argo_floats: list[ArgoFloat] = field(default_factory=list, init=False)
     drifters: list[Drifter] = field(default_factory=list, init=False)
     ctds: list[CTD] = field(default_factory=list, init=False)
+    xbts: list[XBT] = field(default_factory=list, init=False)
 
 
 def simulate_schedule(
@@ -257,6 +259,16 @@ def _make_measurements(self, waypoint: Waypoint) -> timedelta:
                         lifetime=self._ship_config.drifter_config.lifetime,
                     )
                 )
+            elif instrument is InstrumentType.XBT:
+                self._measurements_to_simulate.xbts.append(
+                    XBT(
+                        spacetime=Spacetime(self._location, self._time),
+                        min_depth=self._ship_config.xbt_config.min_depth_meter,
+                        max_depth=self._ship_config.xbt_config.max_depth_meter,
+                        fall_speed=self._ship_config.xbt_config.fall_speed_meter_per_second,
+                        deceleration_coefficient=self._ship_config.xbt_config.deceleration_coefficient,
+                    )
+                )
             else:
                 raise NotImplementedError("Instrument type not supported.")
 

src/virtualship/static/schedule.yaml

@@ -25,3 +25,8 @@ waypoints:
       latitude: 0.02
       longitude: 0.02
     time: 2023-01-01 02:00:00
+  - instrument: XBT
+    location:
+      latitude: 0.03
+      longitude: 0.03
+    time: 2023-01-01 03:00:00

src/virtualship/static/ship_config.yaml

@@ -17,5 +17,10 @@ ctd_config:
 drifter_config:
   depth_meter: 0.0
   lifetime_minutes: 40320.0
+xbt_config:
+  max_depth_meter: -285.0
+  min_depth_meter: -2.0
+  fall_speed_meter_per_second: 6.7
+  deceleration_coefficient: 0.00225
 ship_underwater_st_config:
   period_minutes: 5.0