An apparatus and a method for the contactless detection of vehicles via one or more magnetometers for measuring the geomagnetic field, in which at least one magnetometer includes a device for measuring the gravitational field.

Described herein are systems and apparatus for transverse gradiometer (TVG) acquisition using a towed platform. A first wing surface that is pitch-adjustable based on rotation about a leading edge of the first wing surface. A second wing surface that is pitch-adjustable based on rotation about a leading edge of the second wing surface, and wherein a pitch of the second wing surface is adjustable independently from a pitch of the first wing surface. Unlocking insights from Geo-Data, the present invention further relates to improvements in sustainability and environmental developments: together we create a safe and livable world.

A movement detection unit includes a movable body, a first sensor, a second sensor, and a signal processor. The movable body performs a movement in a first direction. The first sensor detects a first magnetic field change which is caused by the movement of the movable body and outputs a first signal. The second sensor is provided in the first direction at a location different from a location of the first sensor. The second sensor detects a second magnetic fled change which is caused by the movement of the movable body and outputting a second signal. The signal processor includes a signal generating circuit that generates a third signal and a fourth signal on a basis of the first signal. The third signal and the fourth signal have waveforms different from each other.

A two-axes MEMS magnetometer includes, in one plane, a freestanding rectangular frame having inner walls and four torsion springs, wherein opposing inner walls of the frame are contacted by one end of only two torsion springs, each torsion spring being anchored by its other end, towards the center of the frame, to a substrate. In operation, the magnetometer measures the magnetic field in two orthogonal sensing modes using differential capacitance measurements.

Utility locators for providing information about hidden or buried pipes or other cavities are disclosed. A locator may be configured to provide positional information associated with the buried utility based on signals received from a line trace signal and a sonde signal and present the positional information on a visual display or other output device.

A device and a method for detecting anomalies, including: acquiring a normal signal reflecting a normal state, determining on the basis of the normal signal a probability density which models a normal behavioral state, setting an information filter based on the probability density , the information filter being configured to converge toward a limit value L when it is applied to samples of a normal signal, while increasing its value in response to the detection of an anomaly, setting a threshold value S based on the convergence limit value, acquiring a current signal reflecting the current behavioral state, sampling the current signal in a current series of N samples, computing a result of applying the information filter to the current series of N samples, comparing the result with the threshold value S, an anomaly being detected if the result exceeds the threshold value.