Abstract: A measuring device includes a pair of sensors, an actuator, a noise extraction unit and a low frequency noise (LFN) estimator. The sensors each generate with sample time Ts a sense signal indicating a value of a component of a vectorial physical quantity. The sensors have an Allan variance curve with a minimum value for a first integration time T1. The curve has a first and second tangent line being tangent at integration time 0, and integration time T1 respectively. The tangent lines intersect each other at an intersection point for a second integration time T2. The estimator having an effective integration time Teff determined by, Ts, T1 and T2, generates an estimated noise signal indicative for the estimated value of the noise component from the difference signal and from information about the relative rotation between the sensors.

Abstract: A navigation device (1) comprises: a navigation state estimation unit (11) for repeatedly providing a navigation state estimate comprising at least one of the position, the velocity and the attitude of the device, a prediction unit (12) for providing, using the navigation state estimate, a predicted magnetic property value, a storage unit (13) for retrieving, using the navigation state estimate, a previously stored magnetic property value, a subtraction unit (14) for producing the difference of the predicted magnetic property value and the retrieved magnetic property value, a filter unit (15) for producing, using said difference, a navigation state correction value, and a correction unit (16) for correcting, using said navigation state correction value, a corrected navigation state estimate.

Abstract: A method of producing location information relating to articles (e.g. 9o) utilizes tag devices (10, 1112, • • •)• The method comprises the steps of: • the tag devices (e.g. I0), when in each other's proximity, exchanging identification data and storing the time and date of the exchange together with the identification data of the other tag device, and also storing data relating to previous exchanges, • the tag devices, when in the proximity of an information collection device (e.g. 2o), communicating the stored times and dates together with the stored identification data to an information collection device, • the information collection device (20) transmitting the times and dates and the identification data received from the tag devices to a central processing device (3), and • the central processing device (3) deriving location information from the times and dates and the identification data. Each tag device (e.g. 1o), during each encounter with another tag device (e.g.

Abstract: A signal processing module (50) comprises a difference signal generating module (60) for generating at least one difference signal (?) from a first and a second acceleration measurement vector signal (S1, S2), the first and the second acceleration measurement vector signal (S1, S2) respectively comprising a first and a second sequence of vector signal samples, the vector signal samples comprising at least a first and a second linearly independent acceleration measurement signal component, wherein the vector signal samples represent a measurement result of an acceleration sensor having a variable orientation as a function of time, wherein samples in the first sequence have a corresponding sample in the second sequence.

Abstract: The invention relates to a method of guiding a salvo of guided projectiles to a target. The method comprises the steps of generating a beam defining a common reference coordinate system, determining the position of each projectile relative to the beam, and providing to each projectile: position information of other projectiles. Further, the method includes the step of associating dispersion parameters to the salvo of guided projectiles. In addition, the method comprises the step of determining numerical values of the dispersion parameters based on accuracy uncertainty. Also, the method includes the step of controlling the projectiles to an optimal dispersion by using a swarming technique based on the position information of the projectiles and on the numerical values of the dispersion parameters.

Abstract: A navigation system is disclosed comprising a navigation device (2a) with a navigation sensor unit (3) and a magnetic field sensor unit (4), the navigation device is arranged to be moved. The navigation sensor unit (3) is arranged for providing a navigation signal with navigation information (?, ?). The magnetic field sensor unit is arranged for providing a magnetic field signal (H) indicative for a magnetic field strength.

Abstract: A measuring device is disclosed for measuring a vectorial physical quantity (x), comprising a first and a second sensor (S1, S2), an actuator (M2), a noise extraction unit (NX) and a low frequency noise estimator (LF). The first and a second sensor (S1, S2) are arranged for measuring a component of the vectorial physical quantity (x), and for generating a respective sense signal (y1, y2). The sensors have an Allan variance curve with a minimum value for a particular integration time Tmin, said Allan variance curve having a first tangent line to a portion of the curve for which the integration time approaches 0, and having a second, horizontal, tangent line of constant standard deviation corresponding to said Allan minimum value, said first and said second tangent line having an intersection point for a second particular integration time.

Abstract: A navigation system is described comprising at least a first and a second navigation device (201A, 201B) that each is capable of determining an initial estimation (P1A, P1B) of their own position,—the first navigation device (201A) having a facility (225A) for transmitting its relevant navigation information (P1A) to the second navigation device (201B),—the second navigation device (201B) having a facility (225B) for receiving the relevant navigation information (P1A),—at least one of the first and second navigation device (201A, 201B) having a facility (210A, 210B) for providing a proximity signal (Spr, S?pr) that indicates whether the first and second navigation device are within proximity of each other,—the second navigation device having a dead reckoning facility (210B) for calculating the initial estimation (P1B) of its position and a facility (250B) for improving an accuracy of estimating its own position using relevant navigation information (P1A) provided by the first navigation device (201A) for posi

Abstract: The invention relates to a method of guiding a salvo of guided projectiles to a target. The method comprises the steps of generating a beam defining a common reference coordinate system, determining the position of each projectile relative to the beam, and providing to each projectile: position information of other projectiles. Further, the method includes the step of associating dispersion parameters to the salvo of guided projectiles. In addition, the method comprises the step of determining numerical values of the dispersion parameters based on accuracy uncertainty. Also, the method includes the step of controlling the projectiles to an optimal dispersion by using a swarming technique based on the position information of the projectiles and on the numerical values of the dispersion parameters.

Abstract: A navigation system is disclosed comprising a navigation device (2a) with a navigation sensor unit (3) and a magnetic field sensor unit (4), the navigation device is arranged to be moved. The navigation sensor unit (3) is arranged for providing a navigation signal with navigation information (?, ?). The magnetic field sensor unit is arranged for providing a magnetic field signal (H) indicative for a magnetic field strength.

Abstract: A navigation system is described comprising at least a first and a second navigation device (201A, 201B) that each is capable of determining an initial estimation (P1A, P1B) of their own position, -the first navigation device (201A) having a facility (225A) for transmitting its relevant navigation information (P1A) to the second navigation device (201B), -the second navigation device (201B) having a facility (225B) for receiving the relevant navigation information (P1A), -at least one of the first and second navigation device (201A, 201B) having a facility (210A, 210B) for providing a proximity signal (Spr, S?pr) that indicates whether the first and second navigation device are within proximity of each other, -the second navigation device having a dead reckoning facility (210B) for calculating the initial estimation (P1B) of its position and a facility (250B) for improving an accuracy of estimating its own position using relevant navigation information (P1A) provided by the first navigation device (201A) for

Abstract: A method of producing location information relating to articles (e.g. 9o) utilizes tag devices (10, 1112, • • •)• The method comprises the steps of: • the tag devices (e.g. I0), when in each other's proximity, exchanging identification data and storing the time and date of the exchange together with the identification data of the other tag device, and also storing data relating to previous exchanges, • the tag devices, when in the proximity of an information collection device (e.g. 2o), communicating the stored times and dates together with the stored identification data to an information collection device, • the information collection device (20) transmitting the times and dates and the identification data received from the tag devices to a central processing device (3), and • the central processing device (3) deriving location information from the times and dates and the identification data. Each tag device (e.g. 1o), during each encounter with another tag device (e.g.

Abstract: A signal processing module (50) comprises a difference signal generating module (60) for generating at least one difference signal (?) from a first and a second acceleration measurement vector signal (S1, S2), the first and the second acceleration measurement vector signal (S1, S2) respectively comprising a first and a second sequence of vector signal samples, the vector signal samples comprising at least a first and a second linearly independent acceleration measurement signal component, wherein the vector signal samples represent a measurement result of an acceleration sensor having a variable orientation as a function of time, wherein samples in the first sequence have a corresponding sample in the second sequence.