Planetary Rovers

01Stereo navigation cameras build local terrain geometry for hazard detection and route selection.

02Hazard cameras watch the near field around wheels and the robotic arm.

03Wheel encoders and inertial sensing estimate motion, attitude and unexpected slip.

04Science cameras and spectrometers identify textures, minerals and targets but are not automatically equivalent to navigation sensors.

05Onboard perception must account for shadows, low texture, dust, steep slopes and changing sun angle.

06Confidence checks matter because a false terrain estimate can strand the rover or damage a wheel.

01Earth-based orbital imagery provides strategic maps and candidate routes before detailed surface driving.

02Visual odometry compares successive camera frames to estimate movement and reduce wheel-slip error.

03Inertial and wheel measurements support short-term motion estimates but accumulate drift.

04Local terrain maps represent rocks, slopes, wheel obstacles and keep-out zones for autonomous driving.

05Mission teams periodically reconcile rover localization with orbital landmarks and science targets.

06The rover must preserve a safe state when localization confidence or terrain assessment becomes weak.

01Wheel drive and steering controllers track commanded speed and angle while monitoring current, slip and stall conditions.

02Autonomous navigation selects short local paths around hazards inside limits set by the mission team.

03Arm and instrument controllers approach targets slowly with clearance, joint and contact constraints.

04Command sequencing schedules movement, imaging, science, heating, communication and sleep around available energy.

05Fault protection can stop an activity, enter safe mode, preserve thermal control and wait for ground diagnosis.

06Recovery is conservative because a risky attempt may permanently end the mission.

01Rugged chassis, rocker-bogie or mission-specific suspension, wheels and steering mechanisms.

02Radiation-tolerant computing, redundant electronics and fault-protected power distribution.

03Stereo navigation cameras, hazard cameras, IMU, wheel encoders and environmental sensors.

04High-gain, low-gain and ultra-high-frequency communication hardware depending on mission architecture.

05Solar arrays or radioisotope power system, rechargeable batteries and thermal-control hardware.

06Robotic arm, mast, drill, coring system, sample cache or instrument deployment mechanism where required.

07Dust-tolerant seals, lubricants, cable routing and materials selected for vacuum, radiation and thermal cycling.

01Define the science objective and surface environment before selecting mobility, instruments and autonomy.

02Test wheels, suspension, actuators and seals in terrain, vacuum, dust, radiation and thermal conditions that reproduce mission risk.

03Validate perception with shadows, low-texture terrain, slopes, wheel slip and camera contamination.

04Run end-to-end mission simulations including delayed commands, limited communication windows and safe-mode recovery.

05Budget energy, heating, data volume and actuator life for each planned activity.

06Use conservative operational limits early, then expand autonomy only after flight evidence supports the change.

01safe traverse distance per operational day

02energy used per metre and per science activity

03wheel slip and localization error

04autonomous drive completion rate

05hazard-detection false positive and false negative rate

06science observations returned per communication window

07safe-mode and command-abort frequency

08instrument placement accuracy

09remaining actuator, battery and thermal margin

01wheel entrapment in soft soil or terrain geometry

02wheel wear, fracture or actuator stall

03visual odometry loss in low-texture or poorly lit terrain

04unexpected slope, rock or clearance condition

05battery, heater or thermal-control constraint

06radiation-induced computer upset

07communication outage or corrupted command sequence

08arm or drill contact outside expected force

09dust contamination of optics, mechanisms or power systems

01reliable perception across unfamiliar natural terrain

02long-range autonomy without human confirmation at every step

03mobility hardware that survives years of abrasive contact

04energy storage and generation in extreme environments

05fault diagnosis with limited telemetry and no repair crew

06science planning under constrained bandwidth

07validation of learned perception for mission-critical decisions