Abstract: Provided is a global navigation satellite system (GNSS) navigation solution generating apparatus and method, the apparatus including a determiner to determine that a spoofing signal exists in a received GNSS signal when a signal having a receiving intensity greater than a predetermined receiving intensity of a normal signal by a predetermined value range is included in the received GNSS signal, a detector to re-detect the normal signal from the GNSS signal when the spoofing signal is determined to exist, and a calculator to generate a GNSS navigation solution by tracking the re-detected normal signal, wherein the predetermined value range is 3 to 5 decibels (dB).

Abstract: Provided is a global navigation satellite system (GNSS) navigation solution generating apparatus and method, the apparatus including a determiner to determine that a spoofing signal exists in a received GNSS signal when a signal having a receiving intensity greater than a predetermined receiving intensity of a normal signal by a predetermined value range is included in the received GNSS signal, a detector to re-detect the normal signal from the GNSS signal when the spoofing signal is determined to exist, and a calculator to generate a GNSS navigation solution by tracking the re-detected normal signal, wherein the predetermined value range is 3 to 5 decibels (dB).

Abstract: The present invention provides a navigation signal receiving apparatus, including: a first navigation information generating unit which receives at least one navigation signal; and a second navigation information generating unit which receives the at least one navigation signal, compares reference information generated based on a first navigation signal with measurement information generated based on the at least one navigation signal to determine whether the at least one navigation signal includes a second navigation signal, estimates normal measurement information using the reference information when the at least one navigation signal includes the second navigation signal, and controls the first navigation information generating unit to trace the first navigation signal which is included in the at least one navigation signal based on the normal measurement information.

Abstract: 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.

Abstract: A location estimating apparatus according to an exemplary embodiment of the present invention is a location estimating apparatus which estimates a position of an electronic apparatus, including a distance calculating unit which calculates a distance from an AP using a strength (RSSI) of an AP signal which is received from the AP; an azimuth calculating unit which calculates an azimuth of the AP with respect to a reference direction using an entrance angle of the AP signal; a position information acquiring unit which acquires position information of the AP from the AP signal; a correction information generating unit which generates correction information based on detection information for movement of the electronic apparatus; and a position information generating unit which generates position information of the electronic apparatus using the distance from the AP and the azimuth based on the position information of the AP and corrects the position information of the electronic apparatus using the correction inf

Abstract: 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.

Abstract: 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.

Abstract: A device and method for providing location information by smart navigation are provided. The device for providing location information may include a generation unit to generate visual synchronization information in response to a location information request from a terminal, a transmission unit to transmit the visual synchronization information and to control the visual synchronization information to be transferred to the terminal, and a computation unit to extract location information of a transmitting station from the visual synchronization information received from the terminal and to compute a location of the terminal.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: Provided is a Global Navigation Satellite System (GNSS) receiver including: an RF signal processor to receive navigation signals; a signal level measurement unit to measure a signal level of each navigation signal; a signal processor to determine whether the navigation signal is a jamming signal or a normal signal based on the signal level, to perform quantization on the navigation signal determined as a jamming signal at a higher ratio than that subject to a normal signal to generate a digital signal, and to signal-process the digital signal; a compensator to identify a satellite ID of the navigation signal according to the result of the signal processing, and to create compensation information about the navigation signal according to the satellite ID; a controller to control the signal processor and the compensator; and a navigation solution processor to calculate a navigation solution of the navigation signal based on the compensation information.

Abstract: An apparatus for transmitting a pseudolite signal so that a navigation signal is transmitted includes: at least four pseudolite configured to generate and output pseudolite codes for navigation; antennas configured to transmit signals outputted by the pseudolite corresponding to the antennas, respectively; and a single synchronization clock unit configured to provide each of the pseudolites with a synchronization clock.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A system for executing diagnosis of vehicle performance using satellite telemetry technology includes a diagnostic unit for compiling telemetry data, transmitted in real-time, of an engine and various parts of a vehicle, comparing the telemetry data with specific values of the engine and various parts to determine if there are any abnormalities in vehicle performance, and monitoring diagnostic results of vehicle performance; and a communications unit for performing communications in real-time through a network with an external user requesting vehicle performance diagnostic results of the diagnostic unit. Accordingly, the driver or external user may easily determine if there are abnormalities in vehicle performance, take steps to cope with vehicle malfunctions before they occur, and know the precise location of any abnormal areas of vehicle performance.

Abstract: A system for executing diagnosis of vehicle performance using satellite telemetry technology includes a diagnostic unit for compiling telemetry data, transmitted in real-time, of an engine and various parts of a vehicle, comparing the telemetry data with specific values of the engine and various parts to determine if there are any abnormalities in vehicle performance, and monitoring diagnostic results of vehicle performance; and a communications unit for performing communications in real-time through a network with an external user requesting vehicle performance diagnostic results of the diagnostic unit. Accordingly, the driver or external user may easily determine if there are abnormalities in vehicle performance, take steps to cope with vehicle malfunctions before they occur, and know the precise location of any abnormal areas of vehicle performance.