Abstract: In order to target and intercept a desired object within a number of objects detected in an environment, detection data is received from two different sensors, where the detection data includes spatial coordinates. A set of four-point subsets (tetrahedra) are selected from each set of spatial coordinates. A number of correlation maps are determined between the first set of spatial coordinates and the second set of spatial coordinates based on the plurality of four-point subsets. The mean sphericity for each corresponding plurality of four-point subsets in the plurality of correlation maps is determined, and a threat object map based on the correlation map having the greatest mean sphericity is created. The desired object is targeted based on the correlation map.

Abstract: A method is disclosed for providing an observer with an intuitive sense of the tactical situation in an operational area that surrounds a point-of-interest. The observer is simultaneously presented a top-down view of the operational area that includes contact indicators for each of one or more contacts within the operational area, and a status display that indicates the instantaneous hostility assessment of one or more of these contacts. In addition, the operator is automatically presented historical information, including contact images, for each contact whose hostility assessment exceeds a threshold level. The operator, or a group of operators, is enabled to view all of the displayed information from a single vantage point, assess the relative hostility of numerous contacts simultaneously, and rapidly confirm the identity of apparently hostile contacts prior to engagement.

Abstract: A library terminal permits a user to execute a loan transaction without assistance. The library terminal (i) provides a visible scan line from a bar code reader indicating the correct positioning of the bar code on a circulating item, (ii) leads a user through a loan transaction, (iii) provides an explicit feedback to a user when an article has an improper position on the article receiving area, (iv) both checks out and checks in circulating items, (v) stores fonts in bit maps of screen displays instead of in a separate font memory, (vi) integrates a security marker reader, a printer, and a controller in the same housing, (vii) processes financial transactions related to the borrowing of circulating items, and/or (viii) displays actions for helping the user to correct errors in use of the terminal.

Abstract: In a code reading device, which receives reflected light obtained by scanning a code represented on a recording medium with a laser light beam and decodes it to obtain the code, the reading probability is improved by varying the focusing position for every scanning period with the laser light beam.

Abstract: A system for tracking a moving target from a moving carrier. The tracking system is provided with a device for measuring the position of the target in relation to the carrier and with a servocontrol unit for servo controlling the aiming of the device. The error between the position of the target and a position estimated for it is given by the measuring device in spherical coordinates. The tracking system is further provided with a converting unit, in which the spherical coordinates are converted into cartesian coordinates. A frame of reference changing unit and a trajectory simulator of the target allow the position of the target to be calculated in relation to a cartesian frame of reference of unvarying orientation and fixed in relation to the earth.

Abstract: A system for tracking a moving target from a moving carrier. The system is provided with an arrangement allowing a measurement of the position of the target in relation to the carrier. The difference between the position of the target and an estimated position for the latter is given by this arrangement, generally in spherical co-ordinates. These spherical co-ordinates are changed by a co-ordinates converting unit into cartesian co-ordinates. The position of the target is given in turn in relation to a cartesian frame of reference of unvarying orientation whose origin is situated close to the instantaneous centre of rotation of the carrier in relation with a trajectory simulator. The frame of reference is then changed in the opposite direction for a control of the position of the measuring arrangement.

Abstract: A harmonic oscillator coordinate converter in combination with analog and digital circuits is described which may accept signals indicative of a measured angle and of a misalignment angle to provide coordinate conversions of a vector through the measured angle and the misalignment angle during a single angle transformation.