Added first simple GPS implementation

spatz/sensors/gps/erinome1.py

@@ -0,0 +1,17 @@
+from typing import List
+
+from numpy.typing import ArrayLike
+from sensors.gps import GPS
+from spatz.dataset import ArrayLike, Dataset
+from spatz.logger import ArrayLike, Logger
+from spatz.transforms import Transform
+
+
+class Erinome_I(GPS):
+    def __init__(self, dataset: Dataset, logger: Logger, transforms: List[Transform] = []):
+        super().__init__(dataset, logger, transforms)
+
+    def _sensor_specific_effects(self, x: ArrayLike) -> ArrayLike:
+        # TODO: What's the GPS module's behavior?
+
+        return x

spatz/sensors/gps/gps.py

@@ -0,0 +1,33 @@
+from typing import Any, List
+from numpy.linalg import norm
+
+from numpy.typing import ArrayLike
+from spatz.dataset import ArrayLike, Dataset
+from spatz.logger import ArrayLike, Logger
+from spatz.sensors import Sensor, NA
+from spatz.transforms import Transform
+
+# WG84 googlen (world model GPS)
+       
+
+
+class GPS(Sensor):
+    def __init__(self, dataset: Dataset, logger: Logger, transforms: List[Transform] = []):
+        """GPS Module which provides the following information:
+        - Longitude (in °)
+        - Latitiude (in °)
+        - Altitude (in °)
+        """
+        super().__init__(dataset, logger, transforms)
+
+    def _get_data(self) -> ArrayLike:
+        vel = norm(self._dataset.get_velocity())
+
+        # TODO: At which speed do we assume that GPS becomes unreliable?
+        if vel / self._dataset.get_mach_number() > 1:
+            return NA
+        
+        x = self._dataset.fetch_values(['latitude', 'longitude', 'altitude'])
+        x = self._sensor_specific_effects(x)
+
+        return x