摘要:
A common-aperture optical system includes a reflective telescope having a common boresight, an entrance pupil, an exit pupil, and a beam path extending from the entrance pupil to and beyond the exit pupil. A beam splitter intersects the beam path so that the beam path is incident upon the beam splitter. A light sensor is positioned to receive an input light beam traveling along the beam path after the beam path intersects the beam splitter and passes the exit pupil of the reflective telescope. A light source produces an output light beam incident upon the beam splitter and positioned to inject the output light beam into an inverse of the beam path and toward the entrance pupil of the reflective telescope. A diverger corrects at least one of the input light beam and the output light beam.
摘要:
A method for recursively determining alignment of a flight vehicle during flight is provided. The method includes generating data in a reference coordinate frame and in a second coordinate frame at a plurality of points in time during the flight, recursively generating first and second matrices from the data in the reference coordinate frame and the second coordinate frame, and at each point in time, determining an alignment output based on the inverted first matrix and the second matrix.
摘要:
A combat tank is converted into an artillery observation tank without requiring removal of the main gun. The combat tank is converted by integrating retrofitted equipment necessary for the artillery observation, especially the navigation system (12), into the vehicle turret (4) such that it does not collide with the main gun. The navigation system (12) is installed with an arbitrary orientation at an arbitrary location in the vehicle turret (4), and adjusted at this location, without requiring a complicated adjustment mechanism for the observation system, or attachment to the elevating mass. The necessary elevation values for the line of sight (21) are obtained through the evaluation of the angular values of a mirror in the mirror head, such as of a primary-target telescope (20), or through evaluation of gun-position angles.
摘要:
An optical feedback technique is utilized for accurately determining the angular orientation of a collimator relative to an electro-optical (EO) system, and for aligning the two. A mirror assembly mounted on the EO system comprises a plurality of mirror elements positioned to receive light from the exit aperture of the collimator and to reflect the light back into the collimator through the aperture, each of the mirror elements having a reflecting surface oriented at a predetermined, unique angle. A beam of light reflected from one of the plurality of mirror elements forms a light spot on a photosensitive surface at the focal plane of the collimator. The relative orientation of the collimator and the EO system is determined by comparing the position of the light spot on the photosensitive surface with a reference position. An error signal is generated based on the comparison of the position of the light spot with the reference position, and in response to the error signal, the orientation of the collimator is adjusted relative to the EO system to align the optical axes thereof.
摘要:
An efficient multi-emitter boresight reference source (12). The efficient reference source (12) includes a first mechanism (182) for transmitting a first portion of electromagnetic energy (184) within a first waveband. A second mechanism (186) transmits a second portion of electromagnetic energy (188) within a second waveband different than the first waveband. A third mechanism (148) for combining the first portion of electromagnetic energy and the second portion of electromagnetic energy to yield a uniform reference beam (28).
摘要:
A system is provided for boresighting a laser to a passive sensor using a fluorescent conversion material. A passive sensor, such as a FLIR, is aligned with a boresight module using a test pattern on a fluorescent conversion material. Laser energy is then emitted onto the fluorescent conversion material at a first wavelength which is beyond the passive sensor's operating waveband. The fluorescent conversion material then radiates the laser energy at a second wavelength which is within the passive sensor's operating waveband. The location where the laser energy is radiated on the fluorescent conversion material is used as a reference in boresighting the laser to the passive sensor.
摘要:
This invention concerns a system for aligning a simulator (3) arranged for firing and mounted on a weapon. The simulator has a radiation source (8) arranged so as to emit a beam along a simulation axis, and adjusting means (10) for adjusting the simulation axis so that it is aligned with the weapon sight. The system is characterized in that it includes a sighting mark at which the weapon sight is to be aimed during alignment, and means arranged in connection with the sighting mark to emit a beam along an axis representing an aligned simulation axis. The system further includes an aligning unit (14) that is deployable at the simulator and in which at least a first part of the beam from the element (8) is reflected along an axis representing the current position of the simulation axis. Position-indicating means (18) are arranged so that the beam alone the axis representing the aligned beam strikes the position-indicating means (18) at a point representing a set-point value for the simulation axis, and so that the beam along the axis representing the current simulation axis strikes the position-indicating means at a point representing an actual value for the simulation axis.
摘要:
In a system for parallel alignment of the axes of a thermal image apparatus, the IR beam path and the visual beam path extend along the same optical elements. A luminous point/four-quadrant sensor unit which in itself is adjusted with precise and stable axes, is assigned to the IR radiation and visual radiation in front of the display (LCD); and an imaging arm which can be swivelled into the IR beam path or is stationary and has a ridge mirror and a plane mirror, or only a beam splitter, is arranged in front of the viewing lens system.
摘要:
Boresighting apparatus includes a laser, a thermal target having an absorbent surface for receiving the laser beam and converting it to a heat spot of infrared radiation, and an optical device for receiving and optically displaying the heat spot. The thermal target is anisotropic, having a low thermal conductivity in the direction laterally of the surface and a high thermal conductivity in the direction perpendicular to the surface, so as to increase the duration of the heat spot with a minimum lateral spreading.
摘要:
In a method for boresighting an infrared search and track sensor to an inertial reference frame provided by a boresight module, a collimated image of a reticle pattern of the boresight module is projected. The projected image is scanned with the sensor to obtain a scanned image. Rotation of the scanned image due to boresight module roll and distortion of the scanned image due to sensor roll are isolated. Distortion of the scanned image due to sensor roll is removed. An arrangement in an infrared search and track sensor is also disclosed.