Abstract:
위성항법해를생성하는장치및 방법이개시된다. 본발명에따른위성항법해생성장치는, 수신된위성항법신호내에미리지정된정상신호수신세기보다미리지정된수치범위만큼더 높은수신세기의신호가포함되어있는경우상기위성항법신호내에기만신호가존재한다고판단하는판단부, 상기판단에따라상기기만신호가존재하는경우상기위성항법신호로부터정상신호를재검출하는검출부, 및상기재검출된정상신호를추적하여위성항법해를생성하는계산부를포함할수 있다. 상기미리지정된수치범위는 3 내지 5 dB 일수 있다.
Abstract:
Disclosed is a device and method for providing location information by smart navigation. The device for providing location information according to an embodiment of the present invention comprises: a generation unit which generates visual synchronization information in response to a location information request from a terminal; a transmission unit which transmits the visual synchronization information in order for the visual synchronization information to be transferred to the terminal; and a computation unit which extracts location information of a transmitting station from the visual synchronization information received from the terminal and computes the location of the terminal. [Reference numerals] (210) Generation unit; (220) Transmission unit; (230) Computation unit; (240) Identification unit
Abstract:
An apparatus for dealing with a jamming signal according to an embodiment of the present invention comprises: a first frequency converter for converting an RF signal of a first satellite into an IF signal; a signal processor for acquiring signal process data by tracking the converted IF signal; a jamming determining part for determining whether a jamming signal occurs or not based on the acquired signal process data; and a signal combining processor for if the jamming signal occurs, processing an RF signal of a second satellite and generating a first satellite navigation message. Therefore, a GPS receiver installed at a fixed location can acquire stable visual information even under the environment where the jamming occurs. [Reference numerals] (110) Receiver; (120) Signal distributer; (130) Switching part; (140) RF/IF signal converter; (150) GPS L1 signal processor; (160) Jamming determining part; (170) Signal combining processor; (180) IF/RF signal converter; (190) GPS L1 receiver
Abstract:
PURPOSE: A method for providing position information of a parked vehicle and an apparatus for the same are provided to display position information of a moving object on a user terminal by enabling position tracking of the vehicle in a parking lot. CONSTITUTION: An apparatus for providing position information includes a first position information calculation part(120), a second position information calculation part(130) and a position information transmitting part(140). The first position information calculation part calculates first position information of a moving object by using three signals received from three signal transmitters. The second position information calculation part calculates second position information of the moving object by mapping the calculated first position information of the moving object to section information around the moving object. The position information transmitting part transmits the calculated second position information of the moving object to a terminal. [Reference numerals] (110) Signal receiving part; (120) First position information calculation part; (130) Second position information calculation part; (140) Position information transmitting part; (150) Parking section information storage part; (160) Surrounding geography information recognition part
Abstract:
본 발명은 실내 측위를 하고자 하는 단말기가 정상적으로 항법을 수행하여 자신의 위치정보를 이미 알고 있는 주변의 항법수신기를 탑재한 장치 또는 단말기에게 실내측위를 위한 정보를 요구하는 신호를 송신한 후, 주변단말기들로부터 그 단말기들의 위치정보가 포함된 정보를 수신하면, 상기 신호의 전파이동시간과 주변단말기들의 위치정보 및 그 위치정보의 신뢰성 정보를 이용하여 삼변측량 기법을 통해 자신의 위치를 측정하는 단말기와 시스템 그리고 그 방법에 관한 것이다. 이러한 방법으로 실내에서 측위를 수행한 단말기는 실내에서 측위를 요청하는 다른 단말기가 존재하는 경우에, 자신의 위치정보 및 그 위치정보의 신뢰성 정보를 보내줌으로써, 실내의 다른 단말기들도 측위를 수행할 수 있게 해준다. 결국 위성항법신호를 이용할 수 없는 실내의 모든 단말기들이 실내측위용 정보를 서로 주고받음으로써 자신의 위치를 측정할 수 있게 된다.
Abstract:
본 발명은 위성항법시스템( GNSS : Global Navigation Satellite System) 수신기의 신호획득 방법 및 장치에 관한 것으로서, 항법신호에 대해 빠른 신호획득을 수행하기 위하여 입력 신호 속도 조절 기법(Rate Control), 의사 잡음(PRN :Pseudo-Random Noise) 코드의 고속푸리에 변환 (FFT :fast Fourier transform) 저장 기법(FFT Lookup Table), FFT 도플러 검색 기법(FFT Doppler Search) 및 최대값 검색 기법(Max Serial Search) 등을 사용하는 것을 특징으로 한다. 본 발명에 따른 위성항법시스템 수신기의 신호획득 방법 및 장치는 GNSS 수신기의 신호획득 시간을 단축시킬 수 있고, 또한 고속푸리에 변환 (FFT :fast Fourier transform) 연산을 줄임으로써 수신기를 구성하는 하드웨어 자원과 스펙을 효율적으로 만족시킬 수 있다. 위성항법시스템( GNSS : Global Navigation Satellite System), 신호획득(Acquisition),
Abstract:
A GNSS(Global Navigation Satellite System) navigation receiver and an operation method thereof are provided to shorten a TTFF(Time to First Fix) by generating valid ephemeris information by an estimation of a present time and a position. A GNSS navigation receiver includes a RF receiving part(210), a demodulating part(220), a navigation data generating part(230), a time/position estimating part(240), an ephemeris information generating part(250), a memory part(260), and a control part(270). The RF receiving part receives a GNSS navigation satellite signal from a GNSS satellite, and outputs a digital data after converting the GNSS navigation satellite signal. The demodulating part demodulates the outputted digital data, and searches a frequency uncertainty and a code delay, and demodulates an original signal from the digital data through a demodulating process. The navigation data generating part generates a navigation data by using the demodulated digital data, extracts information related to navigation information from the demodulated digital data, and generates a navigation data based on the extracted information.
Abstract translation:提供GNSS(全球导航卫星系统)导航接收机及其操作方法,以通过估计当前时间和位置来产生有效的星历信息来缩短TTFF(Time to First Fix)。 GNSS导航接收机包括RF接收部分(210),解调部分(220),导航数据产生部分(230),时间/位置估计部分(240),星历信息生成部分(250) 部分(260)和控制部分(270)。 RF接收部分接收来自GNSS卫星的GNSS导航卫星信号,并且在转换GNSS导航卫星信号之后输出数字数据。 解调部分对输出的数字数据进行解调,并搜索频率不确定度和码延迟,并通过解调处理解调来自数字数据的原始信号。 导航数据生成部使用解调后的数字数据生成导航数据,从解调后的数字数据中提取与导航信息有关的信息,并根据提取的信息生成导航数据。
Abstract:
A satellite control apparatus for improving signal degradation on a satellite link, a frequency path conversion system using the same, and a method thereof are provided to enhance the link availability of a satellite communication system and increase the revitalization and utilization of the satellite communication system through different frequencies according to weather conditions on a satellite link and solving a problem of signal degradation due to a frequency in use. A satellite control apparatus(100) for improving signal degradation on a satellite link comprises a carrier level monitoring part(130) and a frequency switch control management part(120). The carrier level monitoring part(130) receives a signal transmitted through satellite communication and calculates how much the signal has been attenuated due to signal degradation. The frequency switch control management part(120) judges the changeover of a frequency in use according to the signal attenuation extent outputted from the carrier level monitoring part(130). If frequency switching is required, the frequency switch control management part(120) creates and transmits a frequency changeover command.