A motion sensor package with an elastomer layer that encases the sensor electronics, including the sensors, a processor, an antenna, and a battery. The elastomer layer may provide shock isolation and water resistance to protect the enclosed electronics. Embodiments may also include an outer housing into which the elastomer encased package is installed. The outer housing may for example comprise two cylindrical sections that screw together to close the outer housing. In one or more embodiments part of the outer housing may be integrated into an item of sports equipment. Embodiments for golf may also include a golf club grip adapter that is inserted into the top of a grip, and which attaches to the outer housing containing the elastomer enclosed sensor package.

Method for coupling a sensor to a piece of equipment, such as a golf club, baseball bat, or tennis racket, that ensures that the sensor is in a known position and orientation relative to the equipment. Compensates and calibrates for degrees of freedom introduced in manufacturing and installation. The method may include manufacturing a sensor receiver that aligns with equipment in a fixed orientation, and that holds a sensor housing in a fixed orientation relative to the receiver. Remaining uncertainties in sensor position and orientation may be addressed using post-installation calibration. Calibration may include performing specific calibration movements with the equipment and analyzing the sensor data collected during these calibration movements.

Provided is a vehicle sensor mounting structure by which a GNSS antenna and at least one external sensor are mounted on a roof of a vehicle, the at least one external sensor being configured to detect an external state of the vehicle. The vehicle sensor mounting structure includes: a first wiring hole into which a sensor wiring line of the at least one external sensor is drawn to be placed under the roof, the first wiring hole being formed in the roof; and a second wiring hole into which an antenna wiring line of the GNSS antenna is drawn to be placed under the roof, the second wiring hole being formed in the roof.

Provided is a vehicle sensor mounting structure by which a GNSS antenna and at least one external sensor are mounted on a roof of a vehicle, the at least one external sensor being configured to detect an external state of the vehicle. The vehicle sensor mounting structure includes: a first wiring hole into which a sensor wiring line of the at least one external sensor is drawn to be placed under the roof, the first wiring hole being formed in the roof; and a second wiring hole into which an antenna wiring line of the GNSS antenna is drawn to be placed under the roof, the second wiring hole being formed in the roof.

A method is provided for estimating the parameters of useful signal and multi-path signals originating from a radiolocation signal emitted by a satellite, a location device comprising at least two sensors able to receive the signal. The method comprises the steps of: correlating the signal received by the sensors with a local code by means of correlators, constructing, for each sensor, a sampled intercorrelation function intercorrelating the signal received with the local code, determining a spatio-temporal intercorrelation function on the basis of the concatenation of the intercorrelation functions obtained in the previous step for each sensor, estimating parameters representative of the useful signal and of the multi-path signals by applying a maximum likelihood algorithm, the representative parameters including at least one complex amplitude estimated independently for each sensor.

A method is provided for estimating the parameters of useful signal and multi-path signals originating from a radiolocation signal emitted by a satellite, a location device comprising at least two sensors able to receive the signal. The method comprises the steps of: correlating the signal received by the sensors with a local code by means of correlators, constructing, for each sensor, a sampled intercorrelation function intercorrelating the signal received with the local code, determining a spatio-temporal intercorrelation function on the basis of the concatenation of the intercorrelation functions obtained in the previous step for each sensor, estimating parameters representative of the useful signal and of the multi-path signals by applying a maximum likelihood algorithm, the representative parameters including at least one complex amplitude estimated independently for each sensor.

A method for determining a spatial orientation of a body, including receiving, by receiving equipment located with the body, at least three electromagnetic signal sets, each of the received signal sets having been transmitted by a different one of at least three separate transmitters at different locations, detecting, for each one of the received signal sets, information that partially defines a direction from the body to the transmitter from which the signal set was received, the detected information including one of two angles that fully define an arrival direction from which the body received the signal set in relation to a body frame, the detected information not including a second of the two angles, and determining the spatial orientation of the body, including yaw, pitch, and roll angles relative to a navigation frame, using the detected information for each one of the received signal sets.

A method for determining a spatial orientation of a body, including receiving, by receiving equipment located with the body, at least three electromagnetic signal sets, each of the received signal sets having been transmitted by a different one of at least three separate transmitters at different locations, detecting, for each one of the received signal sets, information that partially defines a direction from the body to the transmitter from which the signal set was received, the detected information including one of two angles that fully define an arrival direction from which the body received the signal set in relation to a body frame, the detected information not including a second of the two angles, and determining the spatial orientation of the body, including yaw, pitch, and roll angles relative to a navigation frame, using the detected information for each one of the received signal sets.

A satellite signal reception device includes: a local signal generator that generates a signal while switching between a signal having a first local frequency corresponding to a first positioning satellite signal and a signal having a second local frequency corresponding to a second positioning satellite signal based on a reference clock signal; and a frequency converter that converts a reception signal of the first positioning satellite signal into a first intermediate frequency signal by multiplying the reception signal of the first positioning satellite signal by the signal having the first local frequency, and converts a reception signal of the second positioning satellite signal into a second intermediate frequency signal of which at least a part of a converted frequency band is in common with the first intermediate frequency signal multiplying the reception signal of the second positioning satellite signal by the signal having the second local frequency.

To accurately monitor the status of an antenna even when characteristics of the antenna chronologically change, the antenna is replaced, and the like.

This device 1 includes a GPS receiver 11, a GPS antenna 12, a modem 12 for transmitting location information of a vehicle that is received by the GPS receiver 11, an antenna current source 13 and a current/voltage conversion unit 14 that detect the status of the GPS antenna 12, a storage unit 16 that rewritably stores a threshold for the status of the GPS antenna 12, and a control unit 18 that determines the status of the GPS antenna 12 and rewrites the threshold stored in the storage unit 12.