2Henriksen L, Krotkov E. Natural Terrain Hazard Detection with a Laser Rangefinder [A]. Proc. of the IEEE International Conference on Robotics and Automation [C]. Albuquerque, 1997, 968 --973.
3Bares J, Wettergreen D. Dante II: technical description, results and lessons learned[J]. The International Journal of Robotics Research, 1999, 18 (7): 621--649.
4Clark R. Scanning rangefinder with range to frequency conversion [P]. US patent 5, 309, 212, 1994.
5Acuity Research Inc. Accurange 4000 user' s manual [Z]. rev. 2. 3, 1999.
6Nitzan D, Brain E, Duda R. The Measure ment and Use of Registered Reflectance and Range Data in Scene Analysis [J]. Proc. of the IEEE, 1977, 65 (2): 206--220.
