Flight Segment Environment Variables¶

All flight segment environment variables use the ORION_ prefix. Components read these at startup; changes require a restart.

SimSat Connection¶

Variable	Default	Used By	Description
`ORION_SIMSAT_URL`	`http://localhost:9005`	NavTelemetry, CameraManager	SimSat REST API base URL

Model Paths¶

Variable	Default	Used By	Description
`ORION_GGUF_PATH`	`./orion-q4_k_m.gguf`	VlmInferenceEngine	Q4_K_M quantized text model
`ORION_MMPROJ_PATH`	`orion-mmproj-f16.gguf`	VlmInferenceEngine	FP16 multimodal vision projector

Storage Directories¶

Variable	Default	Used By	Description
`ORION_MEDIUM_STORAGE_DIR`	`./media/sd/medium/`	TriageRouter, EventAction	MEDIUM image storage. Path + filename must be < 100 chars
`ORION_DOWNLINK_QUEUE_DIR`	`./media/sd/downlink_queue/`	GroundCommsDriver	HIGH frame disk queue (outside comm window)

Ground Station Parameters¶

Variable	Default	Used By	Description
`ORION_GS_LAT`	`46.5191`	NavTelemetry	Ground station latitude (default: EPFL Ecublens)
`ORION_GS_LON`	`6.5668`	NavTelemetry	Ground station longitude
`ORION_GS_RANGE_KM`	`2000.0`	NavTelemetry	Comm window radius in km (10% hysteresis on exit)

Ground Receiver Connection¶

Variable	Default	Used By	Description
`ORION_GDS_HOST`	`127.0.0.1`	GroundCommsDriver	IP address of the ground receiver (receiver.py)
`ORION_GDS_PORT`	`50050`	GroundCommsDriver	TCP port of the ground receiver

Example: Pi-to-Mac Deployment¶

export ORION_SIMSAT_URL=http://192.168.1.183:9005
export ORION_GGUF_PATH=./orion-q4_k_m.gguf
export ORION_MMPROJ_PATH=orion-mmproj-f16.gguf
export ORION_MEDIUM_STORAGE_DIR=./media/sd/medium/
export ORION_DOWNLINK_QUEUE_DIR=./media/sd/downlink_queue/
export ORION_GDS_HOST=192.168.1.183