Abstract: Techniques involve attenuating noise from engine exhaust from an engine. For example, an apparatus includes a first tube having an input end which receives the engine exhaust from the engine, and an output end which outputs the engine exhaust. The apparatus further includes a second tube which encircles the output end of the first tube. The second tube has an exhaust end through which the engine exhaust outputted by the output end of the first tube is allowed to escape, and a resonator end which is opposite the exhaust end. The apparatus further includes a reverse resonator disposed at the resonator end of the second tube. The reverse resonator defines a reverse resonator chamber and a reverse resonator chamber diameter which is larger than a second tube diameter defined by the second tube.

Abstract: Techniques involve attenuating noise from engine exhaust from an engine. For example, an apparatus includes a first tube having an input end which receives the engine exhaust from the engine, and an output end which outputs the engine exhaust. The apparatus further includes a second tube which encircles the output end of the first tube. The second tube has an exhaust end through which the engine exhaust outputted by the output end of the first tube is allowed to escape, and a resonator end which is opposite the exhaust end. The apparatus further includes a reverse resonator disposed at the resonator end of the second tube. The reverse resonator defines a reverse resonator chamber and a reverse resonator chamber diameter which is larger than a second tube diameter defined by the second tube.

Abstract: An apparatus for registering time and location of a weapon firing of a weapon. The apparatus includes a microcontroller, a pressure sensor located in proximately is provided to the weapon and adapted to determine pressure data based on air pressure in proximity to the weapon and provide the pressure data to a microcontroller, an accelerometer located in proximity to the weapon and adapted to determine acceleration data based on movement of the weapon and provide the acceleration data to the microcontroller; a time device adapted to keep time and provide the time to the microcontroller; a location sensor located in proximity to the weapon and adapted to determine a location of the weapon and provide the location of the weapon to the microcontroller; and a memory coupled to the microcontroller.

Abstract: An exemplary embodiment, the present invention sets forth a method for correlating at least one weapon firing event to at least one scoring event. The method comprising: receiving information relating to a first scoring event; receiving information relating to a first weapon firing event; calculating an angle between a reference line, extending from location of the first weapon event to the location of the first scoring event, and the reference direction at the first computing device; comparing the time of the first scoring event to the time of the weapon firing event at the first computing device; comparing the angle of incidence for the projectile to the calculated angle at the first computing device; and identifying whether the weapon firing event and the scoring event are an unambiguous, one-to-one pairings at the first computing device.

Abstract: An exemplary embodiment of the present invention sets forth an apparatus for registering a scoring event. The apparatus includes a target having a surface; a sensor, positioned in proximity to the target, adapted to detect the occurrence of a scoring event caused by the presence of a projectile in the scoring area and to determine a trajectory of the projectile; a time tracking device adapted to keep track of time of the scoring event; a location sensing device adapted to identify a location of the apparatus; a true north detection device adapted to detect the direction of true north with respect to the surface of the target; and a controller, coupled to the sensor and the true north detection device.

Abstract: An exemplary embodiment, the present invention sets forth a method for correlating at least one weapon firing event to at least one scoring event. The method comprising: receiving information relating to a first scoring event; receiving information relating to a first weapon firing event; calculating an angle between a reference line, extending from location of the first weapon event to the location of the first scoring event, and the reference direction at the first computing device; comparing the time of the first scoring event to the time of the weapon firing event at the first computing device; comparing the angle of incidence for the projectile to the calculated angle at the first computing device; and identifying whether the weapon firing event and the scoring event are an unambiguous, one-to-one pairings at the first computing device.

Abstract: An exemplary embodiment of the present invention sets forth an apparatus for registering a scoring event. The apparatus includes a target having a surface; a sensor, positioned in proximity to the target, adapted to detect the occurrence of a scoring event caused by the presence of a projectile in the scoring area and to determine a trajectory of the projectile; a time tracking device adapted to keep track of time of the scoring event; a location sensing device adapted to identify a location of the apparatus; a true north detection device adapted to detect the direction of true north with respect to the surface of the target; and a controller, coupled to the sensor and the true north detection device.

Abstract: An exemplary embodiment of the present invention sets forth an apparatus for registering time and location of a weapon firing of a weapon. The apparatus includes a microcontroller, a pressure sensor located in proximately to the weapon and adapted to determine pressure data based on air pressure in proximity to the weapon and provide the pressure data to a microcontroller, an accelerometer located in proximity to the weapon and adapted to determine acceleration data based on movement of the weapon and provide the acceleration data to the microcontroller; a time device adapted to keep time and provide the time to the microcontroller; a location sensor located in proximity to the weapon and adapted to determine a location of the weapon and provide the location of the weapon to the microcontroller; and a memory coupled to the microcontroller.

Abstract: A system, method and computer program product provides for integrating a sensor system data and a weapon system data with a graphical user interface (GUI) is provided. An area surrounding the mobile object on the GUI system is displayed. The respective locations of one or more sensed objects sensed by the sensor system in the area may be determined in response to a user selected sensor system input. The one or more sensed objects on the GUI system may be displayed. The weapon system may be targeted upon the one or more sensed objects in response to a user selected weapon system input.

Abstract: A system, method and computer program product provides for determining a location of an external object sensed by a mobile object on a display of the mobile object. The method may include determining a first position of the external object on the display, the first position being sensed by the mobile object at a first position of the mobile object. It may also include determining a second position of the external object on the display, the second position being sensed by the mobile object at a second position of the mobile object. Next, the method may include determining the location of the external object based upon said determining of the first position and said determining of the second position. The first position of the external object and the second position of the external object may be respectively sensed by a sensor system of the mobile object, where the display comprises a graphical user interface (GUI).

Abstract: A system and method to generate a trigger signal based on a real-time adaptive threshold. The system may include a microphone to receive an audio signal, a device to generate a trigger signal based on a real-time adaptive threshold coupled to the microphone to form an adaptive threshold and generate a trigger signal if a magnitude of the audio signal is greater than a magnitude of the adaptive threshold. The system may also include a waveform capture module coupled to the microphone to receive the audio signal and convert the audio signal into a series of waveform packets and a waveform analysis processor to extract characteristics from the waveform packets.

Abstract: Given a trajectory and unit pointing vectors determined based on a planar or other approximation of a shock wave, a method and apparatus are provided to calculate times the sensors should have detected, based on a conical geometry of the shock wave. A difference between the calculated times and the actual times measured by the sensors may be minimized. The minimization may be performed by perturbing the unit vectors. When the perturbation of the unit vectors results in an acceptable difference between the calculated times and the measured times, an accurate trajectory of the projectile can be generated from the perturbed unit pointing vectors.

Abstract: Advanced boresight equipment and methods of using the same to effect a transfer of a two- or three-dimensional frame of reference from an ADL to a device to be boresighted.The equipment includes a stationary inertial sensor that is boresighted with respect to a reference line (such as the aircraft ADL). The stationary inertial sensor includes a first gyroscopic combination for generating a first output indicating a two- or three-dimensional frame of reference based on the ADL, and a docking station. The docking station facilitates alignment of a portable inertial sensor that also has a gyroscopic combination for generating a second output indicating its frame of reference.

Abstract: A training apparatus, method and kit for remotely and substantially instantaneously evaluating the alignment, settings and levels of the aiming devices of a howitzer gun.

Abstract: Methods and apparatus are provided for determining the general direction of the origin of a projectile. At least one sensor, having at least three spaced-apart transducers, each being capable of encountering a blast wave generated at an origin of and by a propellant for the projectile, is provided for generating a signal responsive thereto. From the signals, a time relation is measured between at least three transducers when the blast wave serially encounters each of the three transducers. From the time relations, at least one unit sighting vector from at least one sensor to the origin of the blast wave is determined so that the unit sighting vector points in the general direction of the origin of the projectile.

Abstract: A gyroscopic system and method is provided for translating parallel and non-parallel lines between a reference line and a device to be aligned with respect to the reference line. A first inertial sensor is provided that is configured to be substantially stationary. This inertial sensor is boresighted with respect to the reference line and includes at least two gyroscopes and a mirror having first and second nonplanar surfaces. A second, portable inertial sensor is provided that includes a gimbal, a gimbal drive system, an electronic energy beam generator, a collimator, and at least two gyroscopes. One or more of the electronic beam generator, collimator, and gyroscopes can optionally be mounted on a platform that is mounted on the gimbal and adapted to move in accordance with signals from the gimbal drive system. A control circuit is provided that is operable to measure output signals generated by the first and second inertial sensor gyroscopes and to determine relative orientations of the inertial sensors.

Abstract: Apparatus and method for determining the trajectory of a supersonic projectile of unknown velocity and direction having at least three spaced-apart sensors capable of encountering a shock wave generated by a supersonic projectile passing in the vicinity of the sensors and capable of generating signals in response to the shock wave, which signals are related to an azimuth and elevation angle of a unit sighting vector from each sensor to an origin of the shock wave. Means are provided for calculating from the signals the azimuth and elevation angle of the unit sighting vector from each sensor to the origin of the shock wave. Means are provided for calculating from the unit sighting vector of each of the three sensors, the azimuth and elevation angle of the local trajectory of the projectile.