KR20010101917A - 위성 위치측정 시스템(sps) 신호를 측정 처리하기 위한방법 및 장치 - Google Patents
위성 위치측정 시스템(sps) 신호를 측정 처리하기 위한방법 및 장치 Download PDFInfo
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Classifications
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- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
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- G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
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- G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
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- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
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- G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
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- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/0009—Transmission of position information to remote stations
- G01S5/0018—Transmission from mobile station to base station
- G01S5/0036—Transmission from mobile station to base station of measured values, i.e. measurement on mobile and position calculation on base station
Abstract
Description
Claims (66)
- 위성 위치측정 시스템(SPS) 수신기에 수신되는 위성신호의 도달시간을 측정하기 위한 방법으로서,다수의 SPS 위성으로부터 다수의 SPS 신호를 수신하는 단계와;환경 데이터를 발생시키기 위하여 상기 SPS 수신기가 배치되는 위치에 대응하는 신호 환경을 특성화시키는 단계를 포함하는데, 상기 환경 데이터는 상기 SPS 신호가 상기 위치에 국부적으로 전파되는 방식을 나타내며;상기 다수의 위성중 두개 이상의 위성으로부터의 각 위성신호의 도달시간을 측정하는 단계와;상기 SPS 수신기에 대한 고정위치를 계산하기 위한 도달시간 세트를 발생시키기 위하여 상기 환경 데이터를 사용하여 상기 도달시간을 나타내는 데이터를 처리하는 단계를 포함하는 방법.
- 제 1항에 있어서, 상기 환경 데이터는 상기 다수의 신호중 한 신호에 대한 신호대 잡음비, 신호대 간섭비, 입력 신호 강도, 신호 감쇄, 상관함수 파형, 및 피크폭 값중 적어도 하나를 포함하는 것을 특징으로 하는 방법.
- 제 1항에 있어서, 상기 SPS 신호는 상기 SPS 신호가 상기 위치의 약 1000미터내에 있을때 상기 위치에 국부적으로 전파되는 것을 특징으로 하는 방법.
- 제 3항에 있어서, 상기 특성화 단계는 상기 신호 환경이 옥내환경인지 또는 옥외 환경인지를 나타내는 것을 특징으로 하는 방법.
- 제 3항에 있어서, 하나 이상의 잘못된 SPS 신호를 식별하는 단계와;상기 하나 이상의 잘못된 SPS 신호에 대한 식별 결과로써 상기 SPS 수신기에 의해 수행되는 도달시간 측정치를 정정하는 단계를 포함하는 것을 특징으로 하는 방법.
- 제 3항에 있어서, 상기 SPS 수신기는 결합 수신기 및 무선 통신장치내에 포함되며, 상기 결합 수신기는 상기 환경 데이터를 사용하여 상기 도달시간을 나타내는 상기 데이터를 처리하도록 구성된 디지털 프로세서를 포함하는 것을 특징으로 하는 방법.
- 제 6항에 있어서, 상기 무선통신장치는 셀룰라 통신신호를 처리하는 셀룰라 통신시스템이며, 상기 특성화 단계는 상기 셀룰라 통신신호의 신호 파라미터를 결정하는 단계를 포함하는 것을 특징으로 하는 방법.
- 제 3항에 있어서, 상기 도달시간 세트는 통신링크를 통해 기지국으로 전송되는 것을 특징으로 하는 방법.
- 제 3항에 있어서,제 1 SPS 위성으로부터 제 1 SPS 신호세트에 대한 제 1 가능한 상관피크를 결정하는 단계와;상기 제 1 SPS 신호 세트에 대한 제 2 가능한 상관피크를 결정하는 단계와;상기 제 1 SPS 신호세트를 수신한 상기 SPS 수신기로부터 상기 제 1 및 제 2 가능한 상관피크를 결정하는 식별자를 전송하는 단계를 더 포함하는 것을 특징으로 하는 방법.
- 제 3항에 있어서, 상기 도달시간 세트의 도달시간 측정치는 상기 신호 환경에 기초하여 바이어스 조절과 함께 정정되는 것을 특징으로 하는 방법.
- 위성 위치측정 시스템(SPS) 수신기의 위치를 결정하기 위한 방법으로서,SPS 위성으로부터 SPS 신호를 수신하는 단계와;상기 SPS 신호의 상관 출력에 대한 피크폭 값 또는 상기 SPS 신호의 신호대 간섭비(SIR)중에서 선택된 적어도 하나를 결정하는 단계와;상기 피크폭 값 또는 상기 SIR중 상기 선택된 하나를 사용하여 상기 SPS 수신기의 위치를 결정하는 단계를 포함하는 방법.
- 제 11항에 있어서, 하나 이상의 SPS 신호를 식별하는 단계와;하나 이상의 잘못된 SPS 신호의 식별 결과로써 상기 SPS 수신기에 의해 수행되는 도달시간 측정을 정정하는 단계를 포함하는 것을 특징으로 하는 방법.
- 제 11항에 있어서, 상기 도달시간 측정은 상기 피크 폭값 또는 상기 SIR중 하나에 기초하여 바이어스 조절과 함께 정정되는 것을 특징으로 하는 방법.
- 위성 위치측정 시스템(SPS) 수신기에서 수신된 위성신호 도달시간을 측정하기 위한 방법으로서,다수의 SPS 위성으로부터 다수의 SPS 신호를 수신하는 단계와;환경 데이터를 발생시키기 위하여, 상기 SPS 수신기가 배치되는 위치에 대응하는 신호환경을 특성화시키는 단계와;상기 환경 데이터를 사용하여 상기 위성신호의 하나 이상의 특성과 관련된 하나 이상의 파라미터에 대한 임계값을 선택하는 단계와;상기 측정된 다수의 도달시간을 발생시키기 위하여, 상기 다수의 위성중 두개 이상의 위성으로부터 각 위성신호 도달시간을 측정하는 단계와;상기 SPS 수신기에 대한 고정 위치를 계산하기 위한 도달신호 세트를 발생시키기 위하여 상기 하나 이상의 파라미터에 대한 임계값을 사용하여 상기 도달시간을 나타내는 데이터를 검사하는 단계를 포함하는 방법.
- 제 14항에 있어서, 상기 환경 데이터의 하나 이상의 특성은 상기 다수의 신호중 하나의 신호에 대한 신호대 잡음비, 신호대 간섭비, 입력 신호강도, 신호감쇄, 상관함수 파형, 및 피크폭 값중 적어도 하나를 포함하는 것을 특징으로 하는 방법.
- 제 15항에 있어서, 상기 신호환경을 특성화시키는 상기 단계는 상기 SPS 수신기가 빌딩내에 있는 동안 상기 다수의 SPS 신호를 수신하는 경우 옥내 환경으로써 상기 신호환경을 특성화하며, 또는 상기 SPS 수신기가 빌딩내에 있지 않는 동안 상기 다수의 SPS 신호를 수신하는 경우 옥외 환경으로써 상기 신호 환경을 특성화하는 단계를 포함하는 것을 특징으로 하는 방법.
- 제 16항에 있어서, 상기 신호 환경을 특성화하는 상기 단계는 상기 SPS 수신기가 소정수의 빌딩을 가진 영역내에 있는 동안 상기 다수의 SPS 신호를 수신하는 경우 도시환경으로써 상기 신호환경을 특성화하며, 또는 상기 SPS 수신기가 상기 소정수의 빌딩보다 적은 수의 빌딩을 가진 영역내에 있는 동안 상기 다수의 SPS 신호를 수신하는 경우 시골환경으로서 상기 신호환경을 특성화하는 단계를 포함하는 것을 특징으로 하는 방법.
- 제 15항에 있어서, 하나 이상의 잘못된 SPS 신호를 식별하는 단계와;상기 하나 이상의 잘못된 SPS 신호의 식별 결과로써 상기 SPS 수신기에 의해 수행되는 도달시간 측정을 정정하는 단계를 포함하는 것을 특징으로 하는 방법.
- 제 18항에 있어서, 추정된 바이어스 값을 발생시키기 위하여 상기 다수의 측정된 도달시간중 하나 이상의 측정된 시간에서 바이어스 에러를 추정하는 단계와;상기 추정된 바이어스 값을 사용하여 상기 다수의 측정된 도달시간을 정정하는 단계를 포함하는 것을 특징으로 하는 방법.
- 제 19항에 있어서, 상기 환경 데이터를 사용하여 각각의 측정된 도달시간에 대한 에러 임계값을 규정하는 단계와;상기 각각의 측정된 도달시간의 에러를 상기 에러 임계값과 비교하는 단계와;상기 도달시간 측정시의 상기 에러가 상기 에러 임계값을 초과하는 경우에 도달시간 측정치를 제거하는 단계를 포함하는 것을 특징으로 하는 방법.
- 제 16항에 있어서, 상기 SPS 수신기는 결합 수신기 및 무선 통신장치내에 포함되며, 상기 결합 수신기는 상기 위성신호의 도달시간 측정을 실행하도록 구성된 디지털 프로세서를 포함하는 것을 특징으로 하는 방법.
- 제 14항에 있어서, 상기 신호환경을 특성화시키는 상기 단계는 상기 다수의 SPS 신호의 적어도 하나의 신호에 대한 신호대 잡음비, 신호대 간섭비, 입력신호 강도, 신호 감쇄, 상관 함수파형, 및 피크폭값중 적어도 하나를 결정하는 단계를포함하는 것을 특징으로 하는 방법.
- 제 21항에 있어서, 상기 무선통신장치는 셀룰라 전화를 포함하며, 상기 SPS 수신기의 위치는 셀룰라 전화 전송영역내에 있는 것을 특징으로 하는 방법.
- 위성 위치측정 시스템(SPS) 수신기를 사용하여 위치를 결정하기 위한 방법으로서,다수의 SPS 위성으로부터 다수의 SPS 신호를 수신하는 단계와;상기 다수의 SPS 신호의 각 신호에 대한 적분기간을 결정하는 단계를 포함하는데, 상기 적분기간은 각각의 대응하는 SPS 신호에 대한 도달시간 측정을 수행하기 위하여 사용되는 기간에 대응하며;상기 다수의 SPS 신호의 각 신호에 대한 최대 상관 피크값 및 상관 피크폭을 결정하는 단계와;상기 각각의 최대 상관 피크값에 대응하는 코드위상을 결정하는 단계와;상기 다수의 SPS 신호의 각 신호에 대한 도플러값을 결정하는 단계와;상기 다수의 SPS 신호의 각 신호와 연관된 하나 이상의 신호특성을 결정하는 단계를 포함하는 방법.
- 제 24항에 있어서, 상기 다수의 SPS 신호의 상기 각 신호에 대한 최대 상관 피크값 주위에서 코드 위상세트를 결정하는 단계와;상기 적분기간내에서 발생하는 다중 피크가 존재하는 상기 다수의 SPS 신호의 각 신호에 대하여 플래그를 세팅하는 단계를 포함하는 것을 특징으로 하는 방법.
- 제 24항에 있어서, 상기 다수의 SPS 신호의 각 신호와 연관된 상기 하나 이상의 신호 특성은 신호대 잡음비, 피크폭값, 입력 신호 강도값, 신호 감쇄, 상관 함수 파형 및 신호대 간섭비중 적어도 하나를 포함하는 것을 특징으로 하는 방법.
- 제 26항에 있어서, 상기 SPS 수신기가 환경 데이터를 발생시키기 위하여 배치되는 위치에 대응하는 신호 환경을 특성화하는 단계를 더 포함하는 것을 특징으로 하는 방법.
- 제 27항에 있어서, 상기 환경 데이터를 사용하여 SPS 신호의 도달시간을 측정하는 단계를 더 포함하며, 대응하는 최대 상관 피크값, 도플러 값, 코드위상 및 신호 특성은 상기 위성에 대하여 결정되는 것을 특징으로 하는 방법.
- 제 28항에 있어서, 상기 미리 결정된 임계 기준을 만족하지 않는 위성에 의해 전송된 SPS 신호에 대한 도달시간 측정치를 제거하는 단계를 더 포함하는 것을 특징으로 하는 방법.
- 제 28항에 있어서, 미리 결정된 에러 임계기준을 만족하지 않는 SPS 신호에 대한 도달시간 측정치를 제거하는 단계를 더 포함하는 것을 특징으로 하는 방법.
- 제 30항에 있어서, 상기 미리 결정된 에러 임계기준은 상기 다수의 위성중 하나 이상의 위성에 의해 전송된 상호상관 신호를 포함하는 것을 특징으로 하는 방법.
- 다수의 위성으로부터 RF 주파수의 SPS 신호를 수신하는 안테나와;상기 안테나에 접속되며, 기저대역 신호를 발생시키기 위하여 상기 수신된 SPS 신호의 RF 주파수를 중간주파수(IF)로 감소시키는 다운컨버터와;상기 다운컨버터에 접속된 디지타이저와;상기 디지타이저에 접속된 프로세서를 포함하며,상기 프로세서는,환경 데이터를 발생시키기 위하여, 상기 SPS 수신기가 배치되는 위치에 대응하는 신호 환경을 결정하며,상기 환경 데이터를 사용하여 상기 위성 신호의 하나 이상의 특성에 관련된 하나 이상의 파라미터에 대한 임계값을 선택하며,다수의 측정된 도달시간을 발생시키기 위하여, 상기 다수의 위성중 두개 이상의 위성으로부터 상기 각 위성신호의 도달시간을 측정하며,상기 SPS 수신기에 대한 고정 위치를 계산하기 위한 도달시간 세트를발생시키기 위하여 상기 하나 이상의 파라미터에 대한 임계값을 사용하여 상기 도달시간을 나타내는 데이터를 검사하도록 구성되는 SPS 수신기 장치.
- 제 32항에 있어서, 통신안테나 및 상기 통신안테나 및 상기 프로세서에 접속된 통신 수신기를 더 포함하며, 상기 통신 수신기는 통신링크를 통해 위성 데이터 정보를 포함하는 데이터 신호를 수신하는 것을 특징으로 하는 SPS 수신기 장치.
- 제 33항에 있어서, 상기 도달시간 세트는 상기 통신링크를 통해 기지국에 전송되는 것을 특징으로 하는 SPS 수신기 장치.
- 제 34항에 있어서, 상기 통신링크는 셀룰라 전화 전송링크를 포함하는 것을 특징으로 하는 SPS 수신기 장치.
- 제 35항에 있어서, 상기 환경 데이터는 상기 SPS 수신기가 옥내 또는 옥외에 위치하는지의 여부와 상기 SPS 수신기가 도시 또는 시골 위치에 배치되는지의 여부를 나타내는 것을 특징으로 하는 SPS 수신기 장치.
- 제 36항에 있어서, 상기 환경 데이터는 사용자에 의하여 상기 SPS 수신기에 입력되는 것을 특징으로 하는 SPS 수신기 장치.
- 제 36항에 있어서, 상기 환경 데이터는 상기 통신링크에 의하여 전송된 데이터를 해석함으로써 결정되는 것을 특징으로 하는 SPS 수신기 장치.
- 위성 위치측정 시스템(SPS) 신호를 처리하기 위한 방법으로서,제 1 SPS 위성으로부터 제 1 SPS 신호세트에 대한 제 1 가능한 상관 피크를 결정하는 단계와;상기 제 1 SPS 신호세트에 대한 제 2 가능한 상관피크를 결정하는 단계와;상기 제 1 가능한 상관 피크 및 상기 제 2 가능한 상관 피크중 하나로부터 상기 제 1 SPS 신호세트의 도달시간을 나타내는 측정을 유도하는 단계를 포함하는 방법.
- 제 39항에 있어서, 상기 제 2 가능한 상관 피크는 상기 제 1 가능한 상관 피크를 뒤따르는 것을 특징으로 하는 방법.
- 제 40항에 있어서, 상기 제 2 가능한 상관 피크는 반사된 SPS 신호로부터 야기되는 것을 특징으로 하는 방법.
- 제 41항에 있어서, 상기 도달시간을 나타내는 측정은 상기 제 1 가능한 상관피크로부터 유도되는 것을 특징으로 하는 방법.
- 제 40항에 있어서, 상기 제 1 SPS 신호세트를 수신하는 SPS 수신기로부터 상기 제 1 가능한 상관피크 및 상기 제 2 가능한 상관피크를 결정하는 식별자를 전송하는 단계를 더 포함하는 것을 특징으로 하는 방법.
- 제 40항에 있어서, 넓은 피크 상관출력을 식별하고, 상기 제 1 SPS 신호세트를 수신하는 SPS 수신기에 대한 위처정보를 결정하기 위하여 사용되는 측정으로부터 상기 넓은 피크 상관출력을 버리는 단계를 더 포함하는 것을 특징으로 하는 방법.
- 제 43항에 있어서, 상기 시간도달을 나타내는 상기 측정을 상기 원격 처리 시스템에서 수신하고 상기 식별자를 수신하는 단계를 더 포함하며, 상기 원격 처리시스템은 셀룰라 무선 주파수 네트워크를 통해 상기 SPS 수신기에 접속되는 것을 특징으로 하는 방법.
- 위성 위치측정 시스템(SPS) 신호를 처리하기 위한 방법으로서,SPS 수신기가 배치되는 위치에서 SPS 신호가 전파되는 방식을 나타내는 신호 환경 데이터를 결정하는 단계를 포함하는데, 상기 신호 환경 데이터는 상기 위치 근처에서 SPS 신호에 대한 다중경로 상태 또는 간섭 상태중 적어도 하나를 나타내는 데이터를 포함하는 방법.
- 제 46항에 있어서, 상기 신호 환경은 전리층 상태와 거의 무관한 것을 특징으로 하는 방법.
- 제 46항에 있어서, 상기 신호 환경 데이터는 (a) 신호대 잡음비, (b) 신호대 간섭비, (c) 피크폭 파라미터, (d) 입력 신호 강도값, (e) 강한 위성 파라미터, 및 (f) 신호 감쇄중 적어도 하나를 포함하는 것을 특징으로 하는 방법.
- 제 46항에 있어서, 상기 SPS 수신기에서 SPS 신호의 도달시간을 나타내는 측정치를 전송하는 단계와;도달시간을 나타내는 상기 측정치를 셀룰라 무선 주파수 통신 링크를 통해 원격 처리시스템에서 수신하는 단계와;상기 SPS 수신기에 대한 위치 솔루션을 결정하기 위하여 도달시간을 나타내는 상기 측정치를 상기 원격 처리시스템에서 처리하는 단계를 포함하는 것을 특징으로 하는 방법.
- 위성 위치측정 시스템(SPS) 신호를 처리하기 위한 방법으로서,제 1 SPS 신호세트에 대한 제 1 가능한 상관피크를 결정하는 단계와;상기 제 1 SPS 신호 세트에 대한 제 2 가능한 상관 피크를 결정하는 단계와;상기 제 1 가능한 상관 피크 및 상기 제 2 가능한 상관피크중 하나로부터 상기 제 1 SPS 신호 세트의 도달시간을 나타내는 측정을 유도하는 단계와;상기 제 1 SPS 신호 세트를 수신하는 SPS 수신기로부터 상기 제 1 가능한 상관 피크 및 상기 제 2 가능한 상관 피크를 결정하는 식별자를 전송하는 단계를 포함하는 방법.
- 제 50항에 있어서, 상기 제 2 가능한 상관 피크는 상기 제 1 가능한 상관피크를 뒤따르는 것을 특징으로 하는 방법.
- 제 51항에 있어서, 상기 제 2 가능한 상관 피크는 반사된 SPS 신호로부터 야기되는 것을 특징으로 하는 방법.
- 제 52항에 있어서, 상기 도달시간을 나타내는 측정치는 상기 제 1 가능한 상관피크로부터 유도되는 것을 특징으로 하는 방법.
- 제 50항에 있어서, 넓은 피크 상관출력을 식별하고, 상기 제 1 SPS 신호세트를 수신하는 상기 SPS 수신기에 대한 위치정보를 결정하기 위하여 사용되는 측정으로부터 상기 넓은 피크 상관출력을 버리는 단계를 더 포함하는 것을 특징으로 하는 방법.
- 제 50항에 있어서, 상기 도달시간을 나타내는 측정치를 원격 처리시스템에서 수신하며 상기 식별자를 수신하는 단계를 더 포함하며, 상기 원격 처리시스템은 셀룰라 무선 주파수 네트워크를 통해 상기 SPS 수신기에 접속되는 것을 특징으로 하는 방법.
- 위성 위치측정 시스템(SPS) 신호를 처리하기 위한 방법으로서,SPS 수신기가 배치되는 위치에서 SPS 신호가 전파되는 방식을 나타내는 신호 환경을 셀룰라 기반 정보 소스로부터 결정하는 단계와;상기 SPS 수신기에 의해 수신된 SPS 신호를 나타내는 데이터가 상기 신호 환경에 기초하여 어떻게 처리되는지를 결정하는 단계를 포함하는 것을 특징으로 하는 방법.
- 제 56항에 있어서, SPS 신호의 도달시간을 나타내는 측정치를 결정하는 단계를 포함하는데, 상기 측정치는 상기 신호 환경에 기초하며;상기 SPS 수신기에서 SPS 신호 도달시간을 나타내는 상기 측정치를 전송하는 단계와;셀룰라 무선 주파수 통신링크를 통해 도달시간을 나타내는 상기 측정치를 원격 처리시스템에서 수신하는 단계와;상기 SPS 수신기에 대한 위치 솔루션을 결정하기 위하여 도달시간을 나타내는 상기 측정치를 상기 원격 처리시스템에서 처리하는 단계를 더 포함하는 것을 특징으로 하는 방법.
- 제 46항에 있어서, 상기 결정단계는 적어도 하나의 SPS 위성으로부터 SPS 신호에 대한 도달시간 측정을 수행하기 위하여 사용되는 적분시간을 결정하는 단계를 포함하는 것을 특징으로 하는 방법.
- 제 24항에 있어서, 상기 코드 위상세트는 상기 다수의 SPS 신호의 각각에 대한 전체 코드 프레임을 포함하는 것을 특징으로 하는 방법.
- 제 28항에 있어서, 소정의 에러 임계 기준을 만족하지 않는 SPS 신호에 대한 도달시간 측정치를 정정하는 단계를 더 포함하는 것을 특징으로 하는 방법.
- 제 27항에 있어서, 상기 환경 데이터중 적어도 일부분에 기초하여 위치를 결정하는 단계를 더 포함하는 것을 특징으로 하는 방법.
- 제 60항에 있어서, 상기 소정의 에러 임계기준은 상기 다수의 위성중 하나 이상의 위성에 의해 전송된 다중경로 신호에 의해 야기된 다중 피크값을 포함하는 것을 특징으로 하는 방법.
- 제 34항에 있어서, 상기 위성신호의 특성은 상기 통신링크를 통해 상기 기지국에 전송되며, 상기 특성은 상기 환경 데이터를 유도하기 위하여 사용되는 것을 특징으로 하는 방법.
- 제 46항에 있어서, SPS 도달시간 측정을 결정하는 단계와;상기 신호환경에 기초하여 바이어스 조절로 상기 도달시간 측정을 정정하는 단계를 더 포함하는 것을 특징으로 하는 방법.
- 제 14항에 있어서, 상기 신호 환경을 특성화하는 상기 단계는 셀룰라 통신 시스테템에 의하여 수신되는 셀룰라 통신신호의 신호대 잡음비, 신호대 간섭비, 신호 강도, 또는 피크폭 값중 적어도 하나를 결정하는 단계를 포함하며, 상기 SPS 수신기 및 상기 셀룰라 통신시스템은 결합 시스템 및 상기 결합 시스템의 일부분에 접속되는 것을 특징으로 하는 방법.
- 제 46항에 있어서, 상기 신호 환경 데이터를 결정하는 상기 단계는 셀룰라 통신시스템에 의해 수신되는 셀룰라 통신신호의 신호대 잡음비, 신호대 간섭비, 신호강도, 또는 피크폭 값중 적어도 하나를 결정하는 단계를 포함하며, 상기 SPS 수신기 및 상기 셀룰라 통신 시스템은 결합 시스템 및 상기 결합 시스템의 일부분에 접속되는 것을 특징으로 하는 방법.
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US09/241,334 US6313786B1 (en) | 1998-07-02 | 1999-02-01 | Method and apparatus for measurement processing of satellite positioning system (SPS) signals |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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KR100741598B1 (ko) * | 2004-05-25 | 2007-07-20 | 세이코 엡슨 가부시키가이샤 | 위성-위치 확인 테이블 메시징 |
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