Patent application number | Description | Published |
20100066600 | MOBILE APPARATUS FOR TRACKING SATELLITE AND METHOD THEREOF - A mobile apparatus for tracking a satellite, includes: a mobile unit; a GPS receiving unit mounted on the mobile unit that generates position coordinates of the mobile unit; a level meter mounted on the mobile unit that adjusts the mobile unit in horizontal and obtains a tilt angle of the mobile unit; an antenna unit mounted on the mobile unit and being adjusted to the true north direction according to the position coordinates. Further, the mobile apparatus for tracking a satellite includes position tracking control unit mounted on the mobile unit that temporarily stops the mobile unit when tracking a position of the satellite, adjusts the mobile unit in horizontal by the level meter and aligns the position coordinates and the tile angles to correct current position information of the mobile unit. | 03-18-2010 |
20110037648 | APPARATUS FOR TRANSMITTING PSEUDOLLITE SIGNAL BASED ON SINGLE CLOCK AND POSITIONING SYSTEM USING THE SAME - An apparatus for transmitting a pseudollite signal so that a navigation signal is transmitted includes: at least four pseudollite configured to generate and output pseudollite codes for navigation; antennas configured to transmit signals outputted by the pseudollite corresponding to the antennas, respectively; and a single synchronization clock unit configured to provide each of the pseudollites with a synchronization clock. | 02-17-2011 |
20110122019 | APPARATUS FOR SEARCHING A DISTRESS SIGNAL AND THE CONTROLLING METHOD THEREOF - Provided are an apparatus for searching a distress signal and a controlling method thereof. The apparatus for searching a distress signal includes: a beacon receiver receiving the distress signal transmitted from a distress beacon apparatus of a COSPAS-SARSAT system; a decoder decoding the distress signal to acquire distress information; and a display unit displaying the acquired distress information. The apparatus for searching a distress signal is used by a search and rescue team. | 05-26-2011 |
20110143778 | SYSTEM AND METHOD FOR ESTIMATING POSITION OF LOST MOBILE TERMINAL, AND MOBILE TERMINAL - Provided are a system and method for estimating position of lost mobile terminal and a mobile terminal. The system for estimating position of lost mobile terminal includes a plurality of base stations and a computing apparatus. Each of the base stations transmits an activation signal, receives a terminal ID from the mobile terminal in response to the activation signal, and transmits a reception time of the terminal ID and the terminal ID. The computing apparatus estimates a position of the mobile terminal corresponding to the terminal ID on the basis of the reception time and a position of each of the base stations. | 06-16-2011 |
20110241937 | APPARATUS AND METHOD FOR SIGNAL ACQUISITION IN GLOBAL NAVIGATION SATELLITE SYSTEM RECEIVER - An apparatus for signal acquisition of a Global Navigation Satellite System (GNSS) receiver may downsample digitalized satellite signals based on a code resolution, correlate the downsampled satellite signals and oversampled pseudo-random noise (PRN) codes using a block unit based on a size of a matching filter, and may perform FFT of a value output as a correlation result by employing, as M points, a number of blocks used for the matching filter. Also, the signal acquisition apparatus may estimate a coarse Doppler and a code phase of the satellite signals by comparing a power value, calculated based on the M-point fast Fourier transformed value, with a threshold value, and may estimate a fine Doppler using zero-padding based FFT when the satellite signals are successfully acquired. | 10-06-2011 |
20110279309 | APPARATUS AND METHOD FOR PSEUDO RANGE VERIFICATION OF GLOBAL NAVIGATION SATELLITE SYSTEM (GNSS) RECEIVER - Provided is a method and apparatus for a pseudo range verification of a global navigation satellite system (GNSS) receiver, more particularly, a method and apparatus for the pseudo range verification of the GNSS receiver by comparing the pseudo range for a measurement calculated in the GNSS receiver and the pseudo range for a verification generated depending on a position of the GNSS receiver. | 11-17-2011 |
20110279313 | APPARATUS AND METHOD FOR PROCESSING NAVIGATION SIGNAL - An apparatus and method for processing a navigation signal are provided. When a navigation signal is received and processed, a search range associated with signal processing may be reduced by directly computing a clock offset of a receiving terminal, and accordingly it is possible to reduce an operation amount associated with the signal processing, and an amount of a power consumed by the receiving terminal. Additionally, due to a reduction in the search range, it is also possible to reduce a time required to acquire a signal. | 11-17-2011 |
20130010837 | SIGNAL PROCESSING METHOD, CORRELATOR, SOFTWARE SIGNAL RECEIVER BY USING CODE CYCLE - Disclosed are a signal processing method using a code cycle, a correlator, and a software signal receiver. An exemplary embodiment of the present invention provides a signal processing method of a satellite navigation signal, including: a frequency generating step generating a predetermined frequency component for removing a frequency component of sample data; a code generating step generating a predetermined code component for removing a code component of the sample data and increasing a sample count when the predetermined code component is generated; and a correlation value generating step, if the sample count is equal to a count per unit time, generating a correlation value between the generated predetermined frequency component and the generated predetermined code component by reading a sample data block. | 01-10-2013 |
20130076562 | PRECISE GPS DEVICE AND METHOD USING A WIRELESS AP - In the present invention, a GPS reference station generates and transmits GPS error correction information for each wireless AP and a user terminal recognizes the GPS error correction information to be used for correcting reception information of a user terminal GPS receiver, thereby acquiring precision positioning performance. That is, a precision poisoning system of the present invention includes: a GPS reference station generating navigation correction information for a wireless access point by receiving a first satellites' signal from a GPS satellite with respect to the reference station and transmitting the generated navigation correction information to the wireless access point; a wireless access point receiving the navigation correction information from the GPS reference station and transmitting the received information to a user terminal; and a user terminal receiving a second satellites' signal from the GPS satellite with respect to the user terminal and recognizing the navigation correction information from the wireless access point to generate precise user position information on the basis of the second satellite signal and the navigation correction information. | 03-28-2013 |
20130080046 | APPARATUS AND METHOD FOR GUIDING DRIVING ROUTE TO DESTINATION - Disclosed are an apparatus and a method for guiding a driving route to a destination that accept a user's needs for a driving route as much as possible and promptly reflect traffic information in real time to guide a driver to arrive at his or her destination by using an optimal route. | 03-28-2013 |
20130093619 | APPARATUS AND METHOD FOR INDOOR POSITIONING - Provided is a technique for estimating an indoor position, by which a terminal may receive a positioning signal from a pseudo satellite, using a plurality of receiving antennas, determine a position of the pseudo satellite based on positional information included in the received positioning signal, estimate a direction of the pseudo satellite based on a phase difference of the positioning signal at each of the plurality of receiving antennas, and estimate a location of the terminal based on the positional information of the pseudo satellite and the estimated direction of the pseudo satellite. | 04-18-2013 |
20130113637 | APPARATUS AND METHOD FOR PROVIDING POSITION INFORMATION, AND USER TERMINAL AND METHOD FOR OUTPUTTING POSITION INFORMATION - Provided are an apparatus and method for providing position information, and a user terminal and method for outputting position information. The apparatus for providing position information includes a first position information calculator configured to calculate first position information of mobile object using at least three signals received from at least three signal transmission devices, a second position information calculator configured to calculate second position information of the mobile object by mapping the calculated first position information of the mobile object to information on the mobile object's surroundings, and a position information transmitter configured to transmit the calculated second position information of the mobile object to a terminal. | 05-09-2013 |
20130127663 | APPARATUS AND METHOD FOR GENERATING SATELLITE NAVIGATION SIGNAL BASED ON SOFTWARE - Provided is an apparatus and method for generating a satellite navigation signal, the method including: extracting, navigation data that is a parameter required to generate a navigation message; verifying visible satellites at a current position of a receiver based on a position of the receiver and positions of satellites calculated based on navigation data; calculating a pseudo distance from each visible satellite and a Doppler of each visible satellite; calculating, as a Doppler period, a duration of time corresponding to a Doppler displacement capable of being processed at the receiver; generating a navigation message frame to generate a satellite navigation signal, based on navigation data and a TOW; and generating a satellite navigation signal of a digitized IF for each visible satellite based on the navigation message frame, the pseudo distance for each visible satellite, and the Doppler for each visible satellite during the Doppler period. | 05-23-2013 |
20130207844 | HYBRID DIRECTION IDENTIFYING APPARATUS AND METHOD - A hybrid direction apparatus and method that rapidly and accurately detects a direction of a radio signal source based on a direction detecting scheme by comparing an amplitude or signal strength, a virtual Doppler scheme, a phase difference comparison scheme while removing an ambiguity based on an amplitude or signal strength scheme, and identify a direction relatively precisely based on a phase difference scheme using only two antennas. Also, an arrival direction of a relative radio wave when an arrival direction of a radio wave is vertical to a single rotating axis may be precisely identified by mounting a directional antenna and a phase comparison antenna on the single rotating axis, and rotating the two antennas. | 08-15-2013 |
20130271323 | APPARATUS AND METHOD FOR FINDING THE DIRECTION OF SIGNAL SOURCE - The direction finding apparatus includes: a first and second antennas configured to receive radio signals respectively; a travel guide unit mechanically coupled with the first and second antennas and configured to provide a travel path along which the first and second antennas are linearly movable; a driver configured to provide a driving force for linearly moving at least one antenna of the first and second antennas in response to a driving control signal; a driving controller configured to provide the driving control signal, wherein the driving control signal is used to separate the first and second antennas from each other by a predetermined distance; and a direction finding unit configured to calculate an angle of arrival (AOA) of radio signals respectively received through the first and second antennas, based on the phase difference between the radio signals, and the predetermined distance. | 10-17-2013 |
20140002303 | APPARATUS AND METHOD FOR HANDLING JAMMING SIGNAL | 01-02-2014 |
20140077999 | METHOD AND APPARATUS FOR DETECTING LOCATIONS OF MULTIPLE RADIO SOURCES - There are provided a method and apparatus for detecting the transmission locations of radio waves transmitted from multiple radio resources. The method of detecting the transmission locations of radio waves includes: calculating a plurality of direction angles indicating directions of a plurality of radio sources based on a plurality of measuring locations, and detecting a plurality of intersections of lines extending in directions made by the direction angles from the plurality of measuring locations; and selecting real locations of the radio sources from among the intersections using signal intensities of radio waves transmitted from the plurality of radio sources and wave attenuation based on distances from the plurality of measuring locations to the intersections | 03-20-2014 |
20140086374 | SYSTEM AND METHOD FOR DETECTING BROADBAND GLOBAL POSITIONING SYSTEM (GPS) JAMMING - A system and method for detecting broadband global positioning system (GPS) jamming is provided, the system including a local oscillator maintainer to maintain a plurality of local oscillators, a frequency band selector to select a frequency band in which jamming is to be detected, in response to receipt of a radio frequency (RF) signal, an oscillating signal output unit to allow an oscillating signal to be output from a local oscillator identified based on the selected frequency band, among the plurality of local oscillators, and an intermediate frequency (IF) signal generator to generate an IF signal using the RF signal and the oscillating signal. | 03-27-2014 |
20140111378 | METHOD AND APPARATUS FOR REMOVING SPOOFING SIGNAL IN SATELLITE NAVIGATION SYSTEM - Provided is a method and apparatus for removing a spoofing signal. The apparatus may convert a global positioning system (GPS) signal from an RF signal to an IF signal, and remove a spoofing signal based on whether the spoofing signal is present in the RF signal. The apparatus may obtain and track the spoofing signal using the IF signal, and generate a characteristic of the spoofing signal. The apparatus may generate an anti-spoofing signal by shifting a phase of the spoofing signal 180 degrees based on the characteristic of the spoofing signal. | 04-24-2014 |
20140347215 | MOUNTING DEVICE FOR ANTENNA AND GEODETIC SURVEYING APPARATUS INCLUDING THE SAME - Disclosed herein is a mounting device for an antenna, including: a first supporting part fixed to any geodetic point in a first direction and having a first length; a second supporting part extended from the first supporting part in a second direction and having a second length; a first mounting part extended from a first point of the second supporting part in the first direction and mounted with a first antenna receiving a first satellite navigation signal transmitted from a navigation satellite; and a second mounting part extended from a second point of the second supporting part in the first direction and mounted with a second antenna receiving a second satellite navigation signal transmitted from the navigation satellite. | 11-27-2014 |
20150035702 | GPS JAMMING SIGNAL RECEIVER AND GPS JAMMING SIGNAL RECEIVING METHOD - A global positioning system (GPS) jamming signal receiver and a GPS jamming signal receiving method are provided. The GPS jamming signal receiver may include a sample data generator to generate a sample data signal with respect to a signal received through an GPS antenna; a jamming signal determiner to determine a jamming state of a GPS jamming signal using the sample data signal and a navigation processing result value of the sample data; and a transmission direction angle calculator to determine a phase difference value of the GPS jamming signal according to the determination result and to calculate a transmission direction angle of the GPS jamming signal. | 02-05-2015 |
20150097722 | APPARATUS AND METHOD FOR RECEIVING NAVIGATION SIGNAL - An apparatus for receiving a navigation signal receives a plurality of navigation signals having different available frequency bandwidths, selects a navigation signal in a band in which signal disturbance does not occur among the plurality of navigation signals, and calculates a navigation solution. | 04-09-2015 |
20150116148 | METHOD FOR PREDICTING SPOOFING SIGNAL AND APPARATUS THEREOF - In a global navigation satellite system, a spoofing signal received at a first point in time is processed to generate measurement data including a carrier phase value, and characteristics of a spoofing signal corresponding to a second point in time at which an anti-spoofing signal is to be generated are predicted on the basis of the measurement data at the first point in time. An anti-spoofing signal is generated on the basis of the predicted characteristics of the spoofing signal. | 04-30-2015 |
20150123846 | APPARATUS AND METHOD FOR DETECTING DECEPTION SIGNAL IN GLOBAL NAVIGATION SATELLITE RECEIVER - An apparatus and method for detecting a deception signal in a global navigation satellite receiver is disclosed, the apparatus for detecting the deception signal in the global navigation satellite receiver including an identifier to identify output data output from a global navigation satellite receiver receiving an input of a global navigation satellite signal, and a determiner to determine whether the global navigation satellite signal is a deception signal and a normal signal. | 05-07-2015 |
Patent application number | Description | Published |
20080313488 | Apparatus and Method for Diagnosing Fault and Managing Data in Satellite Ground System - Provided are an apparatus and a method for diagnosing fault and processing data of a satellite ground system. The apparatus and a method can prevent data loss of a satellite, and efficiently operate the satellite ground system using data buffer and penalty method when a temporary fault occurs. Data buffer stores data in fault situation and penalty method imposes high penalty in critical fault and low penalty in minor fault. System is managed according to penalty degree. The apparatus, includes: a satellite data processing and controlling means; a signal transforming means; a fault detecting and controlling means; a state displaying means for displaying a state of the satellite and the system; a penalty managing means for being notified whether the device has fault or not; a data storing means for storing and transmitting the data; and a system recovery supporting means. | 12-18-2008 |
20090085773 | SYSTEM AND METHOD FOR PROVIDING VEHICLE PARKING INFORMATION USING NAVIGATION SATELLITE - Provided is a system and method for providing vehicle parking information using a navigation satellite. The system includes: a monitoring unit for photographing an image of a vehicle parking space and transmitting the image to a parking space checking unit; the parking space checking unit for checking a vacant parking space based on the transmitted vehicle parking space image and transmitting vacant parking space acquisition information to a location information computing unit; and the location information computing unit for creating and transmitting location information of the vacant parking space, which is vehicle parking information, to a navigation satellite based on own location information acquired based on navigation information transmitted from an external navigation satellite and the transmitted vacant parking space acquisition information. | 04-02-2009 |
20090156139 | COMMUNICATION SYSTEM AND SEARCH AND RESCUE TERMINAL FOR VESSELS - A communication service equipment and a search and rescue terminal device for vessels that are set on board to provide radio communication service including at least one radio signal transmission and reception units, a modulation and demodulation unit, a location information receiving unit, a plurality of frequency conversion unit, signal processing units each connected to the frequency conversion unit, a main control unit, and control the signal processing unit. | 06-18-2009 |
20100033343 | Apparatus and Method for Transmitting/Identifying Location Based on Local Communication - Provided are an apparatus and method for transmitting/identifying a location based on local communication. The apparatus, includes: a location information calculating unit for receiving a Global Positioning System (GPS) signal from a GPS satellite and calculating location information; own location transmitting unit for transmitting a signal, in which the calculated location information and recognition information are inserted, through a local communication antenna; a counterpart location receiving unit for receiving a signal transmitted from another location transmitting/identifying apparatus located in a close range through the local communication antenna; and a counterpart location identifying unit for checking the received signal and identifying a location of another location transmitting/identifying apparatus. | 02-11-2010 |
20100042274 | ATTITUDE CONTROL METHOD USING TARGET TRACK APPROXIMATION - Provided is a method for controlling an attitude of a satellite using target track approximation. The method includes the steps of: a) receiving coordinate information of at least one of target areas; b) generating a target track by approximating a track of a satellite based on the received coordinate information; and c) detecting a location of the satellite on a current track, calculating an attitude angle of the satellite for the target track using the location of the satellite and the location of the target area, and applying the calculated attitude angle of the satellite to control the attitude of the satellite. | 02-18-2010 |