Abstract: A fire-control display adapter for a weapon scope. The fire-control display adapter consists of a display unit positioned at the scope's objective bell and aligned in front of the scope's objective lens. A range finder calculates the distance from a target's aimpoint. A ballistic computer is communicably coupled to both the display unit and the distance sensor. The ballistic computer computes a ballistic solution and causes the display unit to display it. To power to the distance sensor and the display unit, a power source is communicably coupled to the ballistic computer. A mount detachably secures the fire-control display adapter to the weapon's rail.

Abstract: A system for providing stealthy vision, includes a source element providing electromagnetic radiation at a predetermined wavelength to illuminate a target; and a camera imaging the target to be illuminated; wherein the source element provides electromagnetic radiation including shortwave infrared light; and wherein the predetermined wavelength includes a wavelength in the near infrared spectrum wherein the absorption features of an atom or a molecule present in the medium where the electromagnetic radiation propagates form a continuum, that is a wavelength region wherein two or more narrow absorption lines are close enough to each other that they effectively form a single absorption area with a width greater than that of a single absorption line so that the range of the electromagnetic radiation in the medium is limited for all wavelengths within the continuum; wherein the region corresponds to a wavelength range centered at about 1382.8 nm, 1388.1 nm or 1392.4 nm.

Abstract: A system for providing a physical projection routine includes a hardware processor, a system memory storing a software code, and a projection platform. The hardware processor is configured to execute the software code to measure an environmental parameter of a venue, determine, based on the environmental parameter, a desired orientation of the projection platform for executing the physical projection routine, and orient the projection platform according to the desired orientation determined based on the environmental parameter. The hardware processor and software code then execute the physical projection routine by the projection platform oriented using the desired orientation determined based on the environmental parameter.

Abstract: A computer assisted system is disclosed that includes an optical tracking system. The optical tracking system includes an RGB sensor and is configured to capture color images of an environment in the visible light spectrum and tracking images of fiducials in the environment in a near-infrared spectrum. The computer assisted surgical system is configured to generate a color image of the environment using the color images, identify fiducial locations using the tracking images, register pre-operative and/or intra-operative data to the color images using the fiducial locations, and generate an augmented reality (AR) image of the environment by overlaying the data over the color image. The computer assisted surgical system can further include a monitor or a head-mounted display (HMD) configured to present the AR image.

Abstract: A firearm accessory and associated components and methods. The firearm accessory can include a foregrip and/or an illuminator (e.g., light and/or laser). The firearm accessory can include a support body selectively operatively connectable to a support body receiver in a first orientation and in a second orientation. The support body can include an actuator configured to change an operational state of the illuminator and/or a port configured to connect a remote actuator to the support body.

Abstract: Aspects of the present disclosure relate generally to night-vision systems and more specifically to an integrated micro-display module with a flex circuit. One example illustrated herein includes a method of upgrading a night-vision system. The method may include attaching a flex circuit to an intensifier module, in which the flex circuit includes one or more light detectors and extending beyond a leading edge of the intensifier module. The method may include inserting the intensifier module into a housing and folding the flex circuit to expose the one or more light detectors. The method may further include optically coupling a display unit to an output side of an intensifier module of the night vision system. The display unit may be configured to display graphical content in a field of view together with night-vision images from an output of the intensifier module of the night-vision system.

Abstract: A LIDAR system emits laser bursts, wherein each burst has at least a pair of pulses. The pulses of each pair are spaced by a time interval having a variable duration to reduce effects of cross-talk. For example, certain embodiments may have multiple emitter/sensor channels that are used sequentially, and each channel may use a different duration for inter-pulse spacing to reduce the effects of cross-talk between channels. The durations may also be varied over time. The emitters and sensors are physically arranged in a two-dimensional array to achieve a relatively fine vertical pitch. The array has staggered rows that are packed using a hexagonal packing arrangement. The channels are used in a sequential order that is selected to maximize spacing between consecutively used channels, further reducing possibilities for inter-channel cross-talk.

Abstract: An auxiliary optical system is installed on a telescopic sight of a gun, the telescope sight including an eyepiece end, an objective end and a first reticle. The system includes a digital imaging member fixed at the objective end by a first fixing member and partially shielding an objective lens, a display member fixed at the eyepiece end by a second fixing member and electrically connected to the digital imaging member; the digital imaging member configured to perform photosensitive image on environmental images and convert the environmental images into video signals, and generates a second reticle that is adjustable and has the same function as the first reticle, the second reticle and the video signals stacked together to be transmitted to the display member for display. The present disclosure enables the gun to have functions of the digital sight without replacing a conventional telescopic sight.

Abstract: A light detection and ranging (LIDAR) system includes a first optical source to generate a first optical beam, a first collimating lens to collimate the first optical beam, a first prism wedge of a first prism wedge pair to redirect the first optical beam, and a first focusing lens to focus the first optical beam on a front surface of a second prism wedge of the first prism wedge pair, the second prism wedge to direct the first optical beam toward an output lens.

Abstract: A method is provided for calculating the bursting point of at least one projectile fired at a target object, involving measuring the position of the projectile, estimating the position of the projectile, estimating the speed of the projectile, measuring the position of the target object, estimating the position of the target object, estimating the speed of the target object, calculating optimal bursting points for the projectile based on the estimated position of the projectile, the estimated speed of the projectile, the estimated position of the target object and the estimated speed of the target object, and communicating the bursting points for the projectile to the projectile. A computer program, a computer system, and a weapons system are also provided.

Abstract: An RCS reduction surface for reducing a radar cross section of an object is described. The RCS reduction surface comprises at least one absorber portion, wherein the absorber portion is configured to absorb radar waves. The RCS reduction surface further comprises at least one reflecting portion, wherein the reflecting portion is configured to reflect radar waves. A first plane being associated with a top surface of the absorber portion and a second plane being associated with a top surface of the reflecting portion are spaced from each other by a predefined distance. The predefined distance is configured such that radar waves with a predefined wavelength range that are reflected at the absorber portion and at the surface of the reflecting portion interfere destructively with each other. Further, an RCS reduction member and a radar test system are described.

Abstract: The present disclosure describes methods and systems for measuring crosswind speed by optical measurement of laser scintillation. One method includes projecting radiation into a medium, receiving, over time, with a photodetector receiver, a plurality of scintillation patterns of scattered radiation, comparing cumulative a radiation intensity for each received scintillation pattern of the received plurality of scintillation patterns, and measuring a cumulative weighted average cross-movement within the medium using the compared cumulative radiation intensities.

Abstract: A fire control system comprises a fixed base and a sight assembly rotatably attached to the fixed base. The sight assembly includes an optical range finder for calculating a distance to a selected target and a camera having a zoom lens assembly and an optical sensor for generating an image signal representative of a target scene including a selected target. The zoom lens assembly includes a zoom controller and zoom lens optical elements, wherein the zoom controller is configured to change a magnification of the zoom lens optical elements responsive to a calculated distance to the selected target. In a further aspect, a method for imaging a target is provided.

Abstract: A laser range finder and method for adjusting, comprising a beam source, a photodetector, at least one beam shaping optic, an optic bracket, a circuit board, a beam splitting optic and a connecting device; the beam source comprises a first electro-optical component for emitting a laser beam, the photodetector comprises a second electro-optical component for receiving a received beam reflected and/or scattered by a target object along an optical axis, the beam shaping optic is configured to form a laser beam and/or a receiving beam, the optic bracket comprises a first accommodating seat for fixing the first electro-optical component and a second accommodating seat for fixing the at least one beam shaping optic, the circuit board comprises an another seat for fixing the second electro-optical component, the connecting device is configured to connect the optic bracket with the circuit board; the beam splitting optic is arranged on an adjustment bracket.

Abstract: A real time aiming assembly includes a firearm that has a barrel and a grip. A firearm motion sensor is integrated into the firearm and the firearm motion sensor is calibrated to sense a firing axis of the barrel to determine the target of the firearm. A pair of glasses is wearable on a user's face and a glasses motion sensor is integrated into the pair of glasses. The glasses motion sensor is calibrated to sense a viewing axis of the pair of glasses to determine the line of the user. A display unit is integrated into the glasses and the display unit is in communication with the glasses motion sensor. The display unit projects a dot onto a respective one of the lenses to display precisely where the bullet fired from the firearm will strike.

Abstract: Provided is a weapon aiming system including a riflescope and a laser rangefinder (LRF). The riflescope has at least one turret for adjusting the position of an internal reticle aimpoint. At least one encoder senses a relative position change of the turret and/or reticle. The LRF includes at least one pair of Risley prisms operable to adjustably position a LRF aimpoint to coincide with the aimpoint of the riflescope reticle. A motor is associated with each Risley prism. The system is configured such that adjusting the aimpoint of the riflescope reticle causes the encoder to send a position change signal to a controller programmed to, in response, direct the motor to reposition the prisms so that the LRF aimpoint continues to coincide with the reticle aimpoint.

Abstract: A weapon-mounted Fire Control System (FCS) for a handheld weapon includes an imaging sensor and a processing system configured to operate in two modes. In a first mode, for handheld operation of the weapon, the processing system tracks a target, determines an aim-region with which the weapon should be aligned for firing in order to strike the target, and generates an output to facilitate accurate firing of the weapon towards the aim region. The output may indicate the aim region on a display, and/or may control a firing control mechanism. In a second mode, when the weapon is on an adjustable weapon support, the processor tracks a target, determines an aim-region, and generates output signals for controlling operation of at least one actuator of the adjustable weapon support in order to align the weapon with the aim region.

Abstract: An automated weapon system [preferably a human transported weapon] is comprised of a barrel, a targeting subsystem, a computational subsystem, a positioning subsystem, and, a firing subsystem. The barrel is utilized for propelling a fired munitions as aimed towards an area of sighting. The targeting subsystem identifies a chosen target in the area of sighting. The computational subsystem, responsive to the targeting subsystem, determines where the chosen target is and where the barrel needs to be aimed so that the munitions will strike the chosen target. The positioning subsystem adjusts the aim of the munitions responsive to the computational subsystem. The firing subsystem, fires the munitions at the chosen target responsive to the positioning subsystem. In one embodiment, the system is further comprised of an additional linked automated weapon having a separate barrel, separate munitions, a separate positioning subsystem, and a separate firing subsystem.

Abstract: An interactive energy effect system that includes one or more sensors configured to generate a signal indicative of a position of a user-associated object in the system. The interactive energy effect system also includes a system controller that receives the signal and generates a first and second set of instructions based on the signal. The system controller transmits the first instructions to an energy emission system to cause the energy emission system to reposition and activate an energy emitter. Additionally, the system controller transmits the second instructions to a multi-layer display system to cause the multi-layer display system to move towards or away from the user-associated object.

Abstract: The number of pulses of a stimulus signal provided by a conducted electrical weapon (“CEW”) between launch and establishing an electrical circuit with a human or animal target may be counted to determine the distance between the CEW and the target and the distance between electrodes launched by the CEW toward the target while positioned in or near target tissue.

Abstract: The present disclosure provides a method for controlling a laser projection module, a device for controlling a laser projection module, a depth camera and an electronic device. The laser projection module includes a laser emitter. The laser emitter includes a plurality of point light sources. The plurality of point light sources are grouped to form a plurality of light-emitting arrays, and the plurality of the light-emitting arrays are controlled independently. The method includes: obtaining a current distance between the laser projection module and the user; determining a target number of the light-emitting arrays from the plurality of light-emitting arrays according to the current distance; and activating point light sources in a target number of point light sources of the light-emitting arrays.

Abstract: The presently disclosed subject matter includes a computerized method and system for determining miss-distance between platforms. The proposed method and system make use of an electro optic sensor (e.g. camera) mounted on one of the platforms for obtaining additional data which is used for improving the accuracy of positioning data obtained from conventional positioning devices. A navigation error is calculated where the relative position of the two platforms is converted to the camera reference frame. Once the navigation error is available, it can be used to correct a measured miss-distance.

Abstract: An automated weapon system is comprised of a human transported weapon comprising a barrel and munitions; sensing means; targeting means; computational logic for determining where to aim the human transported weapon; aim computational logic; firing activation means; and, firing means. The munitions can be aimed towards a targeting area to be propelled through the barrel. The sensing means senses which of up to a plurality of targets are within firing range of the automated weapon system. The targeting means selects a selected target from the targets in the targeting area that are within the firing range, responsive to the sensing. The computational logic determines where to aim the human transported weapon so that the munitions will hit the selected target if fired at a firing time. The aim computational logic adjusts the aim of the munitions through the human transported weapon, to compensate as needed for where the selected target is at the firing time, responsive to the determining where to aim.

Abstract: A method and fire control system for measuring distance to a burst point of airburst munition including: setting a detonation point distance of airburst munition; firing the weapon with airburst munition at time t0; setting a time of flight, t1, of the airburst munitions based on its set detonation point distance, activating and controlling a laser measurement system including a laser transmitter and receiver for sending laser light at a time t0+t1 and receiving reflected laser light for measuring distance to cloud of smoke resulting from burst of the airburst munition, processing the reflected laser light and defining a range of distances to the cloud of smoke, and setting a range gate around the set detonation point distance prior to processing received reflected laser light within the range gate for limiting the resulting range of distances and cancelling echoes from surrounding terrain.

Abstract: A rifle scope has an eyepiece and a reticle, and wherein the reticle when viewed through the eyepiece displays a horizontal center line that is at the vertical center of the display, and wherein below the horizontal center line there is a set aiming lines, each marked by a first indicium on a first horizontal side of the aiming line, indicating an angle measured in minutes of angle, from the horizontal center line. Finally, a subset of the aiming lines is marked with a second indicium, on a second horizontal side, opposed to the first horizontal side, of the aiming line, and wherein each the second indicium indicates distance in inches from the brisket to the top of the shoulders of a type of deer.

Abstract: Provided is an apparatus for controlling a striking device. The apparatus for controlling the striking device equipped with a weapon to strike a target includes: a display unit which displays an image captured by a camera mounted on the striking device; a control unit which controls firing of the weapon; and a manipulation unit which transmits a fire signal to the control unit, wherein the control unit calculates the number of rounds of ammunition left in the striking device, calculates an accuracy rate which is a probability that the striking device will hit the target, and determines whether the target can be neutralized by considering the calculated number of rounds of ammunition left and the calculated accuracy rate for the target.

Abstract: A targeting system operable to be used with a bow to assist an operator with striking a target with an arrow. The targeting system may comprise a processor, a target sighting window, a ranging module and a projector. The processor may be configured to control the projector to project a first sighting element onto the target sighting window to select the target, determine a range to the selected target based on the reflected beam, determine an orientation of the bow based at least partially on the determined range to the selected target, determine a location on the target sighting window to present a compensated sighting mark corresponding to the determined orientation, and control the projector to present the variable compensated sighting mark on the target sighting window.

Abstract: The invention discloses a wireless control structure of an aiming device comprising a remote controller and a wireless receiver connected wirelessly therewith. Said wireless receiver is installed on the aiming device and is connected with the switch of aiming device; said remote controller includes the remote control chip and keys, indicator light and transmit antenna connected with the remote control chip; said wireless receiver includes the receiving chip and receiving antenna connected therewith. The invention has achieved wireless control of aiming device via a wireless control structure of aiming device and simplified control structure of current aiming device, making the control of aiming device more convenient and visually beautiful.

Abstract: A system, method, and device for configuring an optical aiming device for ballistic drop compensation (BDC). The optical aiming device can include a housing with a reticle pane defining a reticle display field viewable by a user and indicating a zero point, the housing further including a plurality of axially spaced lenses and defining an optical path therethrough. In various embodiments the system includes a display device configured to project an image generated from a display, a processor, and a non-transitory computer readable storage medium. The computer readable data storage medium can include instructions executable by the processor to receive a first set of ballistics input data indicating a first type of ammunition, determine a BDC pattern including at least two holdover marks corresponding to at least two ranges for the first type of ammunition, and project the BDC pattern onto the reticle display field.

Abstract: New systems, hardware and methods for extremely precise aiming and shooting of firearms by relatively unskilled users are provided. In some embodiments, shots may be planned in advance and rapidly carried out. A specialized control system comprising computer hardware allows a user to plot a planned shot or shot sequence with indicators on a site display, evaluate the accuracy of the planned shot(s), adjust the location of the shot(s), and then shoot. In some embodiments, the system may counteract and otherwise adjust for certain ballistic and other accuracy-impacting factors with a position-actuable firing mechanism to maintain a projected flight path of such a point of impact at all times. The system is unobtrusive, allowing users to engage ordinary targeting activity, including ordinary firearm aiming movements. In some embodiments, aiming and execution aspects of the invention are adapted to non-lethal measures, which may be assigned by the system autonomously.

Abstract: A method, apparatus, and non-transitory computer-readable medium for display processing are provided. A projection trajectory of a projectile to a target is calculated. The projectile is moved to the target when the calculated projection trajectory satisfies a shooting condition. A current viewpoint is switched to a viewpoint from the projectile, and a first animation in which the projectile is tracked is played in slow motion. The viewpoint from the projectile is then switched to a viewpoint from the target at a preset time prior to when the projectile hits the target. A second animation is subsequently played in which the target is hit by the projectile.

Abstract: The disclosure relates to a viewing optic. In one embodiment, the disclosure relates to a viewing optic having an integrated display system. In one embodiment, the disclosure relates to a viewing optic having an integrated display system for generating images that are projected into the first focal plane of an optical system.

Abstract: The present application is directed to a firearm reticle operationally configured to correlate one or more of horizontal range estimation information, vertical range estimation information, bullet drop compensation information, wind adjustment information, target travel speed lead information, fire correction information, and combinations thereof for a target object. The firearm reticle is operationally configured for target acquisition of a target object that may be oriented in a plurality of firing positions.

Abstract: In one embodiment, a vehicle mirror includes a heads-up display (HUD) projector, an on-board diagnostics (OBD) transceiver, and one or more processors. The processors access OBD data received by the OBD transceiver from an OBD port of a vehicle. The processors further determine an identification of the vehicle from the accessed OBD data and determine one or more calibration parameters for the HUD projector based on the determined identification of the vehicle. The one or more calibration parameters are operable to position a displayed image from the HUD projector onto a HUD reflector within a line-of-sight of a driver of the vehicle. The processors further send one or more instructions based on the one or more calibration parameters to the HUD projector.

Abstract: An unmanned aerial vehicle (UAV), a beam redirection system, and a method for redirecting a laser beam using one or more UAVs are provided. The UAV includes a housing, a beam deflector, and a vehicle controller. The beam deflector is mounted to the housing. The vehicle controller is configured to control an angular orientation of the beam deflector to redirect a laser beam that is received from an off-board laser source.

Abstract: According to exemplary practice of the present invention, the dynamic trajectory of a moving body is incrementally modeled using temporal and spatial relationships between the body and the target that the body pursues. In each time step, the body has starting positional coordinates and ending positional coordinates. The horizontal travel distance is calculated by taking into account the body's speed and the body's horizontal distance from the target. The vertical travel distance is calculated by taking into account the body trajectory's spatial derivative and the body's horizontal travel distance. The body's time-step-ending positional coordinates thus reflect the change, in accordance with the horizontal travel distance and the vertical travel distance, relative to the body's time-step-starting positional coordinates. Each succeeding time step repeats the computations whereby the starting positional coordinates are the ending positional coordinates of the preceding time step.

Abstract: Described embodiments provide methods and apparatus for adjusting a line of sight to a target to compensate for drift. Embodiments can include an optical assembly configured and arranged for viewing an area including the target, a display window for viewing a line of sight to the target, one or more manual operator controls connected to a digital processor configured to adjust offsets to the line of sight, an automatic operating mode configured to automate adjusting the offsets to correct for drift bias of the line of sight to the target, and an operator control switch configured to switch the system between the automatic mode and a manual mode.

Abstract: A military vessel may include a directable weapon and an antenna. The antenna can be swiveled from a first position, in which the antenna is disposed essentially vertically, into a second position, in which a height of the antenna above the military vessel is reduced to increase a directing range of the directable weapon compared to the first position. A method for operating a military vessel with a directable weapon and an antenna may involve swiveling the antenna from a first position, in which the antenna is disposed essentially vertically, into a second position, in which the height of the antenna above the vessel is reduced to increase the directing range of the weapon compared to the first position.

Abstract: A method for four-dimensional radar tracking includes transmitting a first probe signal; receiving a first reflected probe signal at first and second radar arrays of the radar system; detecting a tracking target; calculating a target range; calculating a target range rate; performing ambiguous angle calculations for first and second target angles; performing unambiguous angle calculations for the first and second target angles; and calculating a four-dimensional tracking solution, including position and range-rate, from the target range, target range-rate, ambiguous angle calculations, and unambiguous angle calculations.

Abstract: An armored vehicle has a turret having a gun; a targeting system which is arranged inside the turret and is provided with a day channel, a night or thermal channel and a laser range-finder, a power control system for controlling the movement of the turret in azimuth and the movement of the gun in elevation; a device for guiding missiles using lasers, which generates a laser guiding line; and a turret controller which determines the mode for guiding the missile, wherein the turret has gyrostabilizer for gyrostabilizing the laser-guiding line.

Abstract: The present invention belongs to the technical field of sighting telescopes, and specifically relates to a pitching angle fitting method for an integrated precision photoelectric sighting system. The present invention puts forward a precision photoelectric sighting system which is simple in shooting calibration and quick and accurate in sighting, adapts to any environmental factor and can furthest reduce the use of sensors and realize double-eye sighting, and provides a pitching angle fitting method for an integrated precision photoelectric sighting system. The system comprises a view field acquisition unit, a display unit, a ranging unit and a sighting circuit unit; the sighting circuit unit is provided with a memory card, the memory card stores the pitching angle fitting method, and precision shooting in any environment is realized using the integrated precision photoelectric sighting system.

Abstract: A gearbox orientation system for indicating the orientation of a gearbox is provided. The orientation system includes at least one sensor for measuring sensed data of a gearbox, such as the relative orientation of the gearbox and its absolute orientation. The system may further include at least one microcontroller in communication with the at least one sensor for determining indicator data using the sensed data. Additionally, the system may further include at least one indicator in communication with the at least one microcontroller for displaying indicator data using the sensed data.

Abstract: Systems and methods are provided to quantify the geometric change of a projectile during ballistic flight using a camera/tracker video system. Image processing tools are used to segment the shape of the projectile in each frame of a launch video, which allows the length to be calculated with sub-pixel accuracy. Subsequent automated analysis uses a baseline length history of a constant length projectile to correct for variations in measured length due to system layout and camera location.

Abstract: The present invention relates to target acquisition and related devices, and more particularly to telescopic gunsights and associated equipment used to achieve shooting accuracy at, for example, close ranges, medium ranges and extreme ranges at stationary and moving targets.

Abstract: The invention belongs to the technical field of sighting mirrors, and specifically relates to a shooting angle fitting method for an integrated precision photoelectric sighting system. The invention puts forward a precision photoelectric sighting system, which is simple in shooting calibration and quick and accurate in sighting, adapts to any environmental factor, can furthest reduce the use of sensors and realizes double-eye sighting. The invention provides a shooting angle fitting method for an integrated precision photoelectric sighting system. The system comprises a view field acquisition unit, a display unit, a ranging unit and a sighting circuit unit; the sighting circuit unit is provided with a memory card, the memory card stores the shooting angle fitting method, and precise shooting under any environment is realized using the integrated precision photoelectric sighting system.

Abstract: A scope having a plurality of range-dependent, point-of-impact indicators (aim points), and methods for use of that scope. Such aim points are superimposed on the user's field of view of a conventional scope. A preferred embodiment may be coupled to a conventional scope. Embodiments include an auxiliary light projector that presents at least one aim point disposed in a user's field of view, and the aim point(s) is/are adjustable for elevation and windage. Aim points may also be adjusted in size, color, shape, and intensity.

Abstract: A game controller is provided. In one embodiment, the game controller includes a main body, a trigger device, and a first adjustment mechanism. The trigger device has a trigger body coupled to the main body and that pivots along a pivotal axis relative to the main body. The first adjustment device has a first surface that contacts a second surface of the main body at a first point of contact when the trigger body is moved. The first adjustment device is movable along a first axis such that the first point of contact is adjusted along the first axis.

Abstract: The present disclosure describes structures, methods, and functionality for measuring a wind profile with networked anemometers. One method includes receiving real-time wind measurement data from each of one or more anemometer sensor platforms (ASPs) in a network, receiving atmospheric data, and calculating, using the received real-time wind measurement data and the received atmospheric data, at least one of real-time wind measurements, a wind profile, an average wind speed, or a weapon aiming offset.

Abstract: Methods and systems for determining a spin rate of a projectile are provided. A receiving module receives a video of a launch of a projectile in which the projectile having at least one marking disposed thereon. A segmenting module segments a plurality of shapes of the projectile from the video. The segmenting module includes a sensitivity module configured to increase a sensitivity of the video to find the projectile in the video. An extraction module extracts at least one column of pixels of the at least one marking from the shapes. A generating module generates a stripe pixel column history image from the at least one column of pixels. A calculating module calculates a spin rate of the projectile from the stripe pixel column history image.

Abstract: The present invention relates to the technical field of sighting, and specifically relates to a photoelectric sighting device capable of indicating shooting in advance and having high shooting accuracy. The sighting device comprises a field-of-view obtaining unit for acquiring image information within a field of view of the sighting device; a display unit, for displaying reticle center and the image information acquired by the field-of-view obtaining unit; a control unit, for determining a target object in the image information and a target point of the target object while indicating shooting in advance; a power supply for supplying power for the photoelectric sighting device. The invention applies shooting indication in advance, so as to avoid a shooter from missing the best shooting time further to improve shooting accuracy.