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The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences. Vol. XXXVII. Part B5. Beijing 2008 
disk for 4 hours flying. However, the three-line scanner data can 
not be stored like this. The data rate of three-line scanner is 
35MByte/s, and the data amount will be up to 500GB for 4 
hours flying. On account of this, we decided to employ 
advanced SCSI programming interface to transfer data, which 
skips windows’ file system to store data into the RAID disks 
directly. The capacity of extending RAID disks achieves 560GB, 
and we deployed two sets of the storage device, hence it can 
fulfil the requirements of 4 hours continuous work. 
Airborne data recording system 
GPS 
reference 
data 
Raw 
GPS/IMU 
data 
Lvent pulse 
data 
Auxiliary 
data 
POSI’ac processing 
Coordinates transform, mapping frame 
l.evel 0: raw imagery 
Interior 
orientation 
parameters 
Loss analysis 
Non-uniform 
correction 
Calculate exterior orientation parameters 
► 
l.evel 1: geocorreted imagery 
Tire third party software to process 
Figure 10. The flow diagram of geocorrection 
Figure 11. Raw and geocorrected hyperspectral imagery 
Figure 12. Raw and geocorrected high spatial imagery 
3.6 Digital processing subsystem 
After a successful flight, we obtained high spatial data, 
hyperspectral data, laser ranging data, attitude and position data, 
and all other required auxiliary data. Therefore, the data 
processing subsystem also contains following modules: high 
spatial program module, hyperspectral program module, laser 
program module and attitude & position program module, as 
well as a program module to merge all sensors and extract the 
required information. Attitude & position program module is 
POSPac software developed by Applanix Corporation. Figure 
10 indicates the working flow to process the high spatial data. 
Hyperspectrai image 
High spatial i 
Merging algorithm 1 : enhance texture 
Merging algori! 
ia 
: principal coi 
,ents transform 
1er.. 
Cj 
•Panoramic image 
Comparison of algorithm left is meadow, middle shrub, right cement road 
Red line represents spectrums before merging, others mean merging results 
Figure 13. Diagram of imagery merging. The top left is 
hyperspectral images, the top right high spatial images, the 
middle left merging results through filter algorithm in frequency 
domain, the middle right another merging results through 
principle components transformation, at the bottom isthe 
comparison of spectrum curve before and after merging. 
4. SUMMARY AND CONCLUSIONS 
Airborne multidimensional integrated remote sensing system 
was finished on 2005. This system can provide high ground 
resolution panchromatic and multispectral imagery and 
hyperspectral imagery as well as laser ranging data 
simultaneously in one flight. The imaging operation is 
controlled by appropriate software implemented in the master 
computer connected to all sensors via net cables. The distortions 
caused by the fight dynamics of the aircraft are rectified using 
the high precise information extracted from the position and 
attitude measurement device developed by Applanix 
Corporation. The standard data format is provided for users’ 
convenience to apply the commercial processing software. 
ACKNOWLEDGEMENTS 
Great thanks to my colleagues who participated and made great 
contributions in this project, including Li Zhang, Yuwei Chen, 
Peixin Hu, Binla Zhang and Qimin Lu et al. Special thanks are 
expressed to Mrs. Kangmei Fang for her contributions to optical 
calibrations in this system. 
REFERENCES 
Applanix Corporation, POS AV/510 Specifications, 
http://www.applanix.com (accessed Feb. 12, 2008). 
LH systems technical reference manual, “LH systems 
PAV3 0-Gyro-stabilized camera mount”, 2001. 
Rainer Sandau, Bernhard Braunecker, Hans Driescher, Andreas 
Eckardt et.al, “Design principle of the LH systems ADS40 
airborne digital sensor”, IAPRS, Vol XXXIII, Amsterdam, 2000. 
Technical manuals (interior communication).