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Leica IPAS20

(Heerbrugg, 6 May 2008) Leica Geosystems has been a pioneer in integrating direct IMU georeferencing systems into airborne sensors. The new Leica IPAS20 modular standalone system delivers direct georeferencing for a wide range of airborne sensors such as imaging, LIDAR, synthetic aperture radar (SAR), thermal and multispectral systems. Leica IPAS20 is equipped with the latest GPS/GLONASS technology and a plug and play IMU interface. Leica Geosystems provides a complete airborne workflow that includes software. The workflow includes direct georeferencing of airborne sensor data and camera orientation, flight planning, flight execution, flight evaluation and project management.

New compact IPAS20 Control Unit


As successor to its Leica IPAS10, Leica Geosystems introduces the IPAS20 system. This solution for airborne direct georeferencing is comprised of reliable, high-quality hardware components conforming to international airborne standards. The Leica IPAS20 Control Unit supports different airborne sensor types and multi-sensor systems with up to four sensors. The plug and play IMU interface enables connection to various types of IMUs, selected based on user requirements for accuracy and exportability.

System integration and optimal workflow
“Perfect integration of hardware and software into one complete system is the key for effective airborne sensing projects. Leica Geosystems has decades of experience in this field. Leica Geosystems provides total system solutions comprised of flexible and modular subsystems that can also be used as standalone components,” states Juergen Dold, Senior Vice President of the Leica Geosystrems Imaging & Scanning Business Area. In the complete Leica Geosystems workflow, IPAS20 with IPAS Pro and IPAS CO permit data acquisition and direct georeferencing of airborne sensor data and camera orientation. Leica FPES is used for optimized flight planning, flight evaluation and project management. Leica FCMS performs flight guidance and sensor control, plus in-flight data evaluation, recording and reporting.


No GNSS base station setup required Post-processing includes Precise Point Positioning (PPP) technology that takes advantage of downloaded precise satellite orbit and clock corrections to the trajectory. The accuracy is between 5 cm and 40 cm. With PPP, no base station setup is required as it is for the traditional differential GNSS positioning technique.

Cost saving GNSS-only configuration
A Leica IPAS20 without IMU is a cost saving solution for airborne imagery and photogrammetry projects. This GNSS-only solution includes PPP technology and provides precise photo centers after GNSS data post-processing.. Through the acquisition of precise positional coordinates of the photo centers and their use in an AT photogrammetric block adjustment, the number of ground control points (GCP’s) can be reduced to a few check points. This results in a significant cost saving in GCP establishment compared to costs for traditional airborne projects.

RCIF30 interface for RC30 aerial camera system – an ASCOT successor
The RCIF30 interface is available for users of the Leica RC30 aerial camera system. It is side mounted on the IPAS20 Control Unit and optimally connects the aerial camera system to the IPAS20 and FCMS. All components act as one compact system that provides direct georeferencing, flight guidance and camera control for RC30 users. This setup is the successor to the Leica ASCOT for RC30.