RU97120510A - METHOD FOR AUTONOMOUS REDUCTION OF DETECTION THRESHOLD AND TRACKING OF BEARING SIGNALS RECEIVED IN ORBIT - Google Patents

METHOD FOR AUTONOMOUS REDUCTION OF DETECTION THRESHOLD AND TRACKING OF BEARING SIGNALS RECEIVED IN ORBIT

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Publication number
RU97120510A
RU97120510A RU97120510/09A RU97120510A RU97120510A RU 97120510 A RU97120510 A RU 97120510A RU 97120510/09 A RU97120510/09 A RU 97120510/09A RU 97120510 A RU97120510 A RU 97120510A RU 97120510 A RU97120510 A RU 97120510A
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RU
Russia
Prior art keywords
speed
receiver
carrier
navigation system
orbit
Prior art date
Application number
RU97120510/09A
Other languages
Russian (ru)
Other versions
RU2187127C2 (en
Inventor
Исслер Жан-Лук
Original Assignee
Сантр Насьональ Д'Этюд Спасьаль
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority claimed from FR9603079A external-priority patent/FR2746232B1/en
Application filed by Сантр Насьональ Д'Этюд Спасьаль filed Critical Сантр Насьональ Д'Этюд Спасьаль
Publication of RU97120510A publication Critical patent/RU97120510A/en
Application granted granted Critical
Publication of RU2187127C2 publication Critical patent/RU2187127C2/en

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Claims (4)

1. Способ автономного понижения порогов обнаружения и отслеживания несущих, принятых на орбите приемником, оснащенным орбитальной навигационной системой, установленной внутри или снаружи приемника, отличающийся тем, что на приемнике устанавливают по меньшей мере одно кольцо фазовой автоподстройки, посредством этого кольца обнаруживают и/или отслеживают несущую, вводят точные вспомогательные данные о скорости и устраняют ошибку между реальной скоростью и вычисленной скоростью, а поиск частоты Доплера принятой несущей выполняют в окрестности предсказанного значения частоты, которое получают при помощи точных вспомогательных данных о скорости, поступающих от орбитальной навигационной системы.1. A method for autonomously lowering the detection and tracking thresholds of carriers received in orbit by a receiver equipped with an orbital navigation system installed inside or outside the receiver, characterized in that at least one phase-locked loop is installed on the receiver, through which rings are detected and / or tracked carrier, enter accurate auxiliary data about the speed and eliminate the error between the real speed and the calculated speed, and the search for the Doppler frequency of the received carrier is performed in the predicted frequency value, which is obtained using accurate auxiliary speed data from the orbital navigation system. 2. Способ по п. 1, отличающийся тем, что принимают приемником вспомогательные данные, необходимые для обнаружения с использованием обычных вспомогательных данных, причем приемником захватывают все сигналы с соотношением С/ No, так, что C/No > (С/ No)a, где (C/No)a является порогом захвата в режиме обнаружения с использованием обычных вспомогательных данных, снижают пороги несущих до величины (С/No)avf, где (C/No)avf является порогом захвата несущих в режиме обнаружения с помощью точных вспомогательных данных о скорости, причем последние поступают от орбитального навигационного оборудования.2. The method according to p. 1, characterized in that the receiver receives the auxiliary data necessary for detection using conventional auxiliary data, and the receiver captures all the signals with a ratio of C / N o , so that C / N o > (C / N o ) a , where (C / N o ) a is the capture threshold in the detection mode using conventional auxiliary data, the carrier thresholds are reduced to (C / N o ) avf , where (C / N o ) avf is the carrier capture threshold in detection mode using accurate auxiliary speed data, the latter being reported t orbital navigation equipment. 3. Способ по п. 2, отличающийся тем, что в случае маневра, который выполняют для управления орбитой спутника, на орбитальную навигационную систему подают описание маневров и обновляют вспомогательные данные о скорости, выдаваемые навигационной системой, а также выполняют следующее условие:
(δPV+δV) < B/fi×C,
где δPV - неопределенность предсказания псевдоскорости, выданного навигационной системой в отсутствии маневра;
δV - точность описания маневра, В - анализируемый участок диапазона частот, С - скорость света и fi - несущая частота сигнала, передаваемого i-м излучателем.
3. The method according to claim 2, characterized in that in the case of a maneuver that is performed to control the satellite’s orbit, a description of the maneuvers is submitted to the orbital navigation system and the auxiliary speed data provided by the navigation system is updated, and the following condition is also fulfilled:
(δPV + δV) <B / f i × C,
where δPV is the uncertainty of the prediction of the pseudo-speed issued by the navigation system in the absence of maneuver;
δV is the accuracy of the description of the maneuver, B is the analyzed section of the frequency range, C is the speed of light, and f i is the carrier frequency of the signal transmitted by the ith emitter.
4. Способ по п. 2, отличающийся тем, что когда модулированная информацией несущая сопровождается соотношением C/N0 так, что (С/N0)avf <C/N0 <(C/N0)a, обновляющую информацию характеристических параметров излучателей передают на приемник с помощью внешнего дистанционного управления, в том случае, когда демодуляция информации невозможна.4. The method according to p. 2, characterized in that when the information-modulated carrier is accompanied by the ratio C / N 0 so that (C / N 0 ) avf <C / N 0 <(C / N 0 ) a , updating the information of the characteristic parameters emitters are transmitted to the receiver using an external remote control, in the case when the demodulation of information is impossible.
RU97120510/09A 1996-03-12 1997-03-11 Procedure of autonomous reduction of thresholds of detection and following of carrier signals received in orbit RU2187127C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9603079A FR2746232B1 (en) 1996-03-12 1996-03-12 PROCESS FOR AUTONOMOUS REDUCTION OF THE ACQUISITION AND PURSUIT THRESHOLDS OF CARRIERS RECEIVED IN ORBITS
FR96/03079 1996-03-12

Publications (2)

Publication Number Publication Date
RU97120510A true RU97120510A (en) 1999-10-27
RU2187127C2 RU2187127C2 (en) 2002-08-10

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Country Status (10)

Country Link
US (1) US6147641A (en)
EP (1) EP0824706B1 (en)
JP (1) JPH11505621A (en)
BR (1) BR9702104A (en)
CA (1) CA2219647C (en)
DE (1) DE69713224T2 (en)
ES (1) ES2177947T3 (en)
FR (1) FR2746232B1 (en)
RU (1) RU2187127C2 (en)
WO (1) WO1997034162A1 (en)

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FR2774828B1 (en) * 1998-02-06 2000-04-21 Centre Nat Etd Spatiales SPACE TELECOMMUNICATIONS SYSTEM INCLUDING AT LEAST ONE SATELLITE, AND PROCESS FOR SYNCHRONIZING SUCH A SYSTEM
SE0100975D0 (en) * 2001-03-19 2001-03-19 Saab Ericsson Space Ab Apparatus and method for performing open loop tracking or signal
US6618010B2 (en) 2001-11-14 2003-09-09 United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Passive tracking system and method
KR100922937B1 (en) * 2003-02-12 2009-10-22 삼성전자주식회사 Apparatus and method for calculating satellite acquisition information to measure position of mobile station
RU2390730C1 (en) * 2009-04-06 2010-05-27 Сергей Васильевич Стрельников Method for ephemeral control of spacecraft global navigation satellite system
RU2622390C2 (en) * 2015-10-29 2017-06-15 Акционерное общество "Российская корпорация ракетно-космического приборостроения и информационных систем" (АО "Российские космические системы") Station (system) of receiving and processing information from middle-orbital segment of space system for search and salvation and method of controlling this station antennas
FR3111435B1 (en) 2020-06-16 2022-07-01 Centre Nat Etd Spatiales Radio navigation signal receiver comprising a correlation power indicator calculator

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US3713149A (en) * 1969-09-05 1973-01-23 Westinghouse Electric Corp Cooperative radar system
US3878522A (en) * 1973-08-07 1975-04-15 Us Navy Tracking receiver
FR2609225A1 (en) * 1986-12-30 1988-07-01 Thomson Csf DEVICE FOR COMPENSATING IN A RADIOFREQUENCY RECEPTOR OF THE DOPPLER EFFECT PRODUCED BY THE RELATIVE MOTION OF A RECEIVER IN RELATION TO A TRANSMITTER ACCORDED ON THE SAME FREQUENCY
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