In the experimental tests of gravity, there have been considerable interests in the possibility of intermediate-range gravity. In this paper, we use the earth-satellite measurement of earth gravity, the lunar orbiter measurement of lunar gravity, and lunar laser ranging measurement to constrain the intermediate-range gravity from λ = 1.2×10m−3.8×10m. The limits for this range are α = 10−5×10, w...

This study evaluates the biomass retrieval error in pinedominated stands when using high spatial resolution airborne measurements from fully polarimetric L-band radar and airborne laser scanning sensors. Information on total aboveground biomass was estimated through allometric relationships from plot-level field measurements. Multiple linear regression models were developed to model relationshi...

We present the design and experimental characterization of a CMOS sensor based on Single-Photon Avalanche Diodes for direct Time-Of-Flight single-point distance ranging, under high background illumination short-range applications. The sensing area has rectangular shape ( <tex-math notation...

In this overview paper the principles of laser scanning systems are presented. This includes a survey of different range measurement principles as well as different mechanisms for the deflection of the emitted laser beam. Furthermore, the usage of the laser scanning (LS) principle at different platforms (airborne (ALS), terrestrial (TLS), satellite) is discussed. Additionally, typical sensor pa...

This paper focuses on the orbit avoidance strategy of the optical remote sensing satellite. The optical remote sensing satellite, moving along the Sun-synchronous orbit, is equipped with laser warning equipment to alert CCD camera from laser attacks. This paper explores the strategy of satellite avoidance to protect the CCD camera and also the satellite. The satellite could evasive to several t...

Reconstruction Textured Urban 3D Model by Fusing Ground-Based Laser Range Image and CCD Image Huijing Zhao and Ryosuke Shibasaki In this paper, a method of fusing ground-based laser range image and CCD image for the reconstruction of textured 3D urban object is proposed. An acquisition system was developed to capture laser range image and CCD image simultaneously from the same platform. The reg...

Autonomous navigation of a mobile robot is a challenging task. Much work has been done in indoor navigation in the last decade. Fewer results have been obtained in outdoor robotics. Since the early 90's, the Global Positioning System (GPS) has been the main navigation system for ships and aircrafts. In open fields, satellite navigation gives absolute position accuracy. The absolute heading info...

Modeling the force of laser pressure on the dynamics of an artificial satellite is studied. The atmospheric effects are taken into consideration. Some important details of the model arising from the thermooptical satellite surface properties are clarified. The model has been exemplified by computing the laser perturbing acceleration for a passive Earth’s satellite (e.g. the satellite Ajisai). T...