In the CAN satellite system, the onboard camera module functions as a mission payload and performs the following key roles:
1. Ground Imaging from Altitude (Observation Mission)
Captures photos or videos of the external environment during descent or flight.
Primarily used to observe ground features, monitor descent trajectories, assess atmospheric conditions, and predict landing locations.
Visual data can be stored on an SD card or transmitted in real time to the ground station.
2. Supplementary Experimental Data
Synchronizes with environmental sensors (e.g., temperature, pressure, acceleration) to enable image-based analysis.
Example applications include tracking cloud movement, monitoring the spread of smoke or dust, and capturing changes in ambient light—valuable for collecting unstructured or situational data.
3. Recovery Support
Enables identification of ground features or landmarks during descent, assisting in post-mission recovery.
Video footage can provide clues such as terrain types, rivers, or man-made structures.
4. Image Processing and AI Experiments
The ESP32-CAM module supports basic AI inference and image filtering functions.
Example capabilities include detecting specific color regions or recognizing patterns such as QR codes or surface changes.
Example CanSat Camera Experiments
Experiment Objective | Camera Utilization Method | Notes |
---|---|---|
Descent Speed Analysis | Continuous image capture at set altitudes → Calculate position over time | Useful for velocity profiling |
Visualization of Rotational Motion | Video capture during spinning descent → Assists in attitude analysis | Can be synchronized with IMU data |
Ground Terrain Detection | Photos taken at various altitudes → Compared with GIS maps | Supports environmental mapping |
ESP32-CAM Specifications Summary
Parameter | Description | Notes |
---|---|---|
Resolution | Captures images up to 1600×1200 (UXGA) | Suitable for aerial observations |
Storage Method | Supports microSD card storage | Onboard data logging |
Communication | Interfaces: Wi-Fi, UART, SPI, I2C | Flexible connectivity options |
Power Consumption | Low power operation | Ideal for battery-powered missions |
Size and Weight | Compact and lightweight | Easy integration into CanSat payloads |