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A self defense weapon formed as a memo pad and which is easily held by a person's fingers, therefore making it possible to provide protection from a mugger and also to quickly and easily write a record or a message without failure of missing or forgetting significant information under a stressful situation.
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| Number | Title | Issue Date |
| 8120526 | Methods, apparatuses and systems for locating non-cooperative objects Measurements of the differential and/or absolute time-of-arrival of separable signals transmitted from a set of spatially-distributed (SD) transmitters are obtained by one or more receivers. The signals transmitted by each transmitter are made separable by encoding ... | 02/21/2012 |
| 7417583 | Methods and apparatus for providing target altitude estimation in a two dimensional radar system Method and apparatus to track a contact using a sensor in a two-dimensional radar system, determine a closest point of approach (CPA) for the contact, determine a time to closest point of approach (TCPA) for the contact, and estimate an altitude for the contact from... | 08/26/2008 |
| 7414567 | ADS-B radar system A system and method of using a standard ADS-B transmitter and encoder to identify targets to provide a collision avoidance system, wherein the method includes the steps of providing a standard ADS-B transmitter and encoder, a phase modulator including a digital synt... | 08/19/2008 |
| 7375675 | Method and system for multiple target class data recording, processing and display for over-the-horizon radar A method and apparatus are disclosed that enable an over-the-horizon-radar (OTHR) system to detect and track multiple target classes simultaneously, where target classes are defined by the speed and acceleration of the tracked objects. The OTHR is tasked in a starin... | 05/20/2008 |
| 7345621 | Real-time multistatic radar signal processing system and method A real-time signal processing engine robustly detects, localizes, tracks and classifies ground targets based on radar signals from a multistatic radar system. The system differentiates between different targets based on an optimized cost function, which can include ... | 03/18/2008 |
| 7295150 | Methods and systems for identifying high-quality phase angle measurements in an interferometric radar system A method for determining a mechanical angle to a radar target utilizing a multiple antenna radar altimeter is described. The method comprises receiving radar return signals at the multiple antennas, populating an ambiguity resolution matrix with the electrical phase... | 11/13/2007 |
| 7292179 | Instantaneous passive range finding A method and apparatus for use in determining the range in a single time sample from a platform to a target are disclosed. The method includes receiving radiation emanating from the target at two points on the platform in a common time sample; detecting the received... | 11/06/2007 |
| 7289877 | Fuel dispensing system for cash customers The present invention is to provide a fuel dispensing system for enhancing cash transactions wherein the system includes a fuel dispenser associated with a control system and a receiver adapted to receive signals including identification indicia from a remote commun... | 10/30/2007 |
| 7274324 | Apparatus and method of tracking objects in flight A path in three-dimensions for an object in flight is determined according to a radar signal reflected by the object. The radar signal is transmitted at an offset angle from horizontal sufficient to capture the object within the transmitted radar signal. The transmi... | 09/25/2007 |
| 7248206 | Instantaneous multisensor angular bias autoregistration Unknown alignment biases of sensors of a tracking system are estimated by an iterative Kalman filter method. Current measurements are corrected for known alignment errors and previously estimated alignment biases. The filter time reference is updated to produce esti... | 07/24/2007 |
| 7239265 | Method for evaluating and controlling a radar installation A method is disclosed for evaluating the terrain surrounding a radar site. The method comprises to calculate the radar horizon around a radar site from stored terrain elevation information. The information obtained can be used for controlling the scanning profile of... | 07/03/2007 |
| 7205939 | Land-based transmitter position determination In a local positioning system, a receiver is adapted for receiving signals from a land-based transmitter. The receiver includes an analog decorrelator for decorrelating the transmitted spread spectrum signals. A down converter connected with an antenna may be spaced... | 04/17/2007 |
| 7199750 | Real-time multistatic radar signal processing system and method A real-time signal processing engine robustly detects, localizes, tracks and classifies ground targets based on radar signals from a multistatic radar system. The system differentiates between different targets based on an optimized cost function, which can include ... | 04/03/2007 |
| 7183965 | Efficient stripmap SAR processing for the implementation of autofocus and missing pulse restoration A moving radar generates a search mode synthetic aperture image of a patch from a sequence of periodic pulse returns having one or more missing pulses. An azimuth and range interpolation generates an interpolated sequence having samples oriented in range and azimuth... | 02/27/2007 |
| 7177779 | Azimuth measuring device and azimuth measuring method An azimuth measuring device capable of calibrating a magnetic sensor without putting load on a user is provided. When a point having amplified output values Sx, Sy, Sz after a sensitivity correction as x, y, z components is arranged on an xyz coordinate system, an o... | 02/13/2007 |
| 7151476 | Radar system having a beamless emission signature A radar system having a beamless emission signature is described. In one implementation, the radar system includes a transmission system and a receiver system. The transmission system is configured to transmit a pattern comprising a plurality of radar signals having... | 12/19/2006 |
| 7136014 | System and method for estimating the azimuth pointing angle of a moving monopulse antenna An invention is provided for determining the azimuth pointing angle of a moving monopulse antenna. Pulses of energy are broadcast at the surface of a planetary body. Reflected signals are received from the surface of the planetary body using a plurality of feeds. A ... | 11/14/2006 |
| 7130449 | Method and system for ground imaging A system and method for determining the slope of a ground imaged area. The system includes a camera, a memory, and a processor. The camera generates a first and a second image of an area of ground from an aircraft. The memory stores bi-directional characteristic inf... | 10/31/2006 |
| 7046190 | Process for phase-derived range measurements A method and apparatus for determining range of a radar target is provided. Signal samples based on returns of a target during tracking are processed to produce a wideband envelope range estimate for components of target motion. The components of target motion inclu... | 05/16/2006 |
| 7038615 | Efficient technique for estimating elevation angle when using a broad beam for search in a radar A method and apparatus for estimating elevation angle when using a broad search beam such as a cosecant-squared beam is provided. The range of a target detected during a search with a broad beam covering a broad angular search area is determined. Based on the determ... | 05/02/2006 |
| 7026979 | Method and apparatus for joint kinematic and feature tracking using probabilistic argumentation A method, apparatus, and computer program product for joint kinematic and feature tracking are presented. Kinematic measurements and feature/class measurements regarding an object are received from a sensor. A probabilistic argumentation operation is performed on th... | 04/11/2006 |
| 7027890 | Fuel dispensing system for cash customers The present invention is a fuel dispensing system for enhancing cash transactions, which includes a fuel dispenser associated with a control system and a receiver adapted to receive signals, including identification indicia from a remote communications unit associat... | 04/11/2006 |
| 7020541 | Fuel dispensing system for cash customers The present invention is a fuel dispensing system for enhancing cash transactions, which includes a fuel dispenser associated with a control system and a receiver adapted to receive signals, including identification indicia from a remote communications unit associat... | 03/28/2006 |
| 6819285 | Monopulse radar system for determining the height of a target An improved method of estimating target elevation angle for dual squinted beam radar systems is disclosed. The target's elevation angle is estimated by receiving complex I/Q data from two receive radar beams and calculating the complex ratio of the complex I/Q data.... | 11/16/2004 |
| 6801156 | Frequency-agile monopulse technique for resolving closely spaced targets A monopulse radar system generates elevation and azimuth difference monopulse estimates of the location of targets in each range cell, where the target may be either a single or plural target, each of which is made up of multiple scattering sources. Each azimuth-ele... | 10/05/2004 |
| 6771205 | Shipboard point defense system and elements therefor A combined defense and navigational system on a naval vessel is disclosed. The disclosed system includes a track-while-scan pulse radar which is controlled to provide either navigational information or tracking information on selected targets. Additionally, the disc... | 08/03/2004 |
| 6741202 | Techniques for 3-dimensional synthetic aperture radar The height of a radar target above a horizontal plane at a location within the horizontal plane is measured using a synthetic aperture radar (SAR). The synthetic aperture radar is mounted on a moving platform. The moving platform moves along a continuous climbing pa... | 05/25/2004 |
| 6690917 | System and method for automatic determination of azimuthal and elevation direction of directional antennas and calibration thereof A system and method for automatically directing a communication antenna to point to a desired wireless communication transceiver, is presented herein. The system includes a position location receiver, which receives signals indicating the position locatio... | 02/10/2004 |
| 6647268 | Mobile unit communication apparatus The object of the invention is to provide a mobile unit communication apparatus that can also efficiently acquire required information from another mobile unit in a place where multiple mobile units gather. To achieve the object, an identification code co... | 11/11/2003 |
| 6498580 | Missile launch point estimation system In a system for estimating the launch point of a missile, Doppler shifted signals reflected from the missile as it travels from its launch point are used in a Kalman filter to estimate the missile position, velocity and acceleration, in earth centered fix... | 12/24/2002 |
| 6373426 | Radar station and radar system comprising at least two such stations The invention relates to a radar station placed on the surface of the earth, and to a radar system comprising at least two such radar stations. The signal-processing equipment of the radar stations is adapted, at each point of time, to calculate probabilities ... | 04/16/2002 |
| 6278401 | Target type estimation in target tracking The present invention is in general related to target type estimation in target tracking systems. The invention enables a low complexity estimation of target type, using, e.g. ESM sensor data, by the introduction of an ambiguity restoring procedure in cer... | 08/21/2001 |
| 6243037 | Tracking method for a radar system A tracking method for a signal echo system, including generating a plurality of gates for respective propagation modes on the basis of a target state prediction for a dwell time, and generating a target state estimate for the dwell time on the basis of ta... | 06/05/2001 |
| 6211810 | Adaptive dwell timing for radar tracking In an air traffic control radar system, a processor is described for correlating primary target data received from a target with a target report and a target track, wherein the processor has a search acquisition time that is adapted to the distance of the... | 04/03/2001 |
| 6201496 | Target angle estimator for search radars A search radar including the improvement of apparatus for enhancing the estimation of the target angle within a search scan of the radar is disclosed. More specifically, the improvement apparatus utilizes the generated scan angles and target amplitude mea... | 03/13/2001 |
| 6166677 | Image synthesizing method using a plurality of reflection radar waves and aircraft image radar apparatus using the method The present invention provides a small-size image radar apparatus to be mounted on an aircraft, having a high resolution not only the flying direction but also in the direction vertical to the flying direction. The image radar apparatus comprises a transm... | 12/26/2000 |
| 6130638 | Method and device for determining an azimuth angle and/or an elevation angle in a multibeam radar system Method and device for determining an azimuth angle and/or an elevation angle, based on a multibeam radar system, in which the echo signals of each radar target are recorded over at least two beams. The amplitude of an echo signal recorded in each receivin... | 10/10/2000 |
| 6118402 | Process for side lobe suppression and amplitude or phase monopulse radar device The process is used for suppressing the effect of signals that are received or sent via side lobes of an antenna (PA; HA) of an amplitude or phase monopulse radar device, in which for the purpose of position measurement of a first and, if need be, a secon... | 09/12/2000 |
| 6061022 | Azimuth and elevation direction finding system based on hybrid amplitude/phase comparison A method for finding a direction associated with a radiated electromagnetic wave, the method including the steps of: detecting the radiated electromagnetic wave; measuring at least one gain difference and at least one phase difference associated with the ... | 05/09/2000 |
| 6049301 | Surveillance apparatus and method for the detection of radio receivers Method and apparatus for the detection of a target receiver unit such as an enemy radar or radio receiver is disclosed. The surveillance system of this invention includes a transmitter unit coupled to an antenna to establish an electromagnetic surveillanc... | 04/11/2000 |
