Atomic co-magnetometers can be utilized for high-precision angular velocity sensing or fundamental physics tests. The sensitivity of a co-magnetometer determines the angle random walk of an angular velocity sensor and the detection limit for a fundamental physics test. A high-sensitivity K-Rb-21Ne co-magnetometer, which is utilized for angular velocity sensing, is presented in this paper. A new...

The position of a magnetic target can be obtained through magnetic anomaly which is measured by a magnetic sensor. Comparing with vector magnetic sensor, the measurement value of the scalar magnetic sensor is almost not influenced by its orientation in measurement coordinate axes. Therefore, scalar magnetic sensors can be easily assembled into an array. Based on analysis of the total scalar mag...

This paper describes the high precision digital sun sensor under development at the University of Naples. The sensor determines the sun line orientation in the sensor frame from the measurement of the sun position on the focal plane. It exploits CMOS technology and an original optical head design with multiple apertures. This allows simultaneous multiple acquisitions of the sun as spots on the ...

With the constant platform fragmentation in the global smartphone and tablet market, providing a multiplatform indoor positioning technology is and ever more complex task. RSSI-based hybrid indoor positioning technologies provide hope for a unified indoor positioning solution with-out the need for calibrating each and every device manually before use. But differing antenna construction, sensor ...

An on-chip magnetometer was fabricated by integrating a planar Hall magnetoresistive (PHR) sensor with microfluidic channels. The measured in-plane field sensitivities of an integrated PHR sensor with NiFe/Cu/IrMn trilayer structure were extremely high at 8.5 μV Oe(-1). The PHR signals were monitored during the oscillation of 35 pL droplets of magnetic nanoparticles, and reversed profiles for t...

In this paper, a tiny low-power wireless sensor network (WSN) node based on msp430 microcontroller is introduced. The node should be serving the needs of a special WSN used for traffic monitoring, or more precisely for the indication of vehicle’s presence. The single vehicle detection is based on the utilization of magnetometer sensor, where the change of Earth’s magnetic field, caused by the m...

Since the seminal work of Daniele Mortari (“Moon-Sun Attitude Sensor,” Journal Spacecraft and Rockets, Vol. 34, No. 3, 1997, pp. 360–364), concept an attitude sensor using images illuminated celestial bodies has been pushed forward through years. The basic idea consists extracting two independent directions from image a body, namely, camera-to-planet planet-to-sun directions. former is estimate...