This workshop will seek contributions covering advanced topics related to the state of the art and future trends of positioning and mapping technologies and algorithms for airborne, land, and marine autonomous systems and applications. Papers addressing the following topics are welcomed: new sensor designs, sensor fusion algorithms, calibration techniques and testing methods for multi-sensor systems, including GNSS, inertial sensors, odometers, magnetometers, radar, LiDAR, cameras, barometers, maps, signals of opportunity, infrared, ultrasound sensors, etc. The workshop will be part of the ISPRS Geospatial Week 2021 and is hosted by the Mohammed Bin Rashid Space Centre (MBRSC) in parallel with several related geospatial workshops.