At present, indoor positioning technology is used in all aspects of life. I study the positioning method of UWB radar network. Because of the interference in the indoor environment, the UWB radar measurement data produce abnormal values. In order to eliminate the outliers, the method of fitting the known true value with the actual measured value is used to obtain the linear relationship between the true value and the measured value, so as to get the unknown true value through the measured value.

Bidirectinal muographic measurements were conducted at the ancient burial mound built in the beginning of the 6th century and later collapsed after a landslide caused by the 1596 Fushimi Earthquake, one of the largest earthquakes over last few centuries in Japan. The result indicated large-scale vertical cracks at the top of the mound, which caused its collapse and thus, an intrinsic problem was suggested with the stability of the basic foundation of the mound before this earthquake.

In this paper, a low-cost, computer-aided and geophone-based system designed to record, monitor and analyze the three-component microtremor data, is presented. This system has several features such as 200 Hz sampling frequency, text data format and data analysis tools. The developed software undertakes many tasks such as communication between the external hardware and computer, transferring, monitoring and recording the seismic data to computer, and interpretation of the recorded data.

One of the four Galilean moons of Jupiter, Europa, is one of the most promising places in the solar system to find life outside Earth. For this reason, the space science community is currently focused on exploring it. One of the main difficulties of such task is the harsh radiation environment, caused by the radiation belts of Jupiter. In this paper we present results for a magnetic fields sensor being exposed to radiation levels similar to those expected at the surface of Europa.

We propose a gradiometer based technique to clean multi-sensor magnetic field data acquired onboard spacecraft. The technique takes advantage on the fact that the maximum variance direction of many AC disturbances onboard spacecraft does not change in time. We apply the proposed technique to the SOSMAG instrument onboard GeoKompsat-2A. We analyse the performance and limitations of the technique and discuss in detail how various disturbances are removed.

Combining short time forecast models, standardized interfaces to a wide range of environment detectors and a flexible user access interface the CITYZER concept provides decision making authorities and private citizens with reliable information about the near-future development of critical environmental parameters like air quality and rain. The system can be easily adapted to different areas or different parameters. Alarms for critical situations can be set and used to support authority decisions.

Soil gas flux describes the movement of various gases either to or from the ground. The ability to efficiently detect changes in soil gas flux has the potential to better understand and detect leakage from Under Carbon Capture and Storage (CCS) schemes, diffuse degassing in volcanic and geothermal areas and greenhouse-gas emissions. Traditional chamber-based techniques may require weeks of fieldwork to to assess a site. We present a new method to speed up assessment of diffuse leakage.