CN204349986U - A kind of signal retransmission unit of multi-satellite system - Google Patents
A kind of signal retransmission unit of multi-satellite system Download PDFInfo
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- CN204349986U CN204349986U CN201420785276.0U CN201420785276U CN204349986U CN 204349986 U CN204349986 U CN 204349986U CN 201420785276 U CN201420785276 U CN 201420785276U CN 204349986 U CN204349986 U CN 204349986U
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Abstract
The utility model discloses a kind of signal retransmission unit of multi-satellite system, relate to GLONASS (Global Navigation Satellite System) technical field; It is made up of reception antenna, signal repeater and transmitting antenna, and signal repeater comprises: preposition power splitter, be connected to lowpass pre-filter on described preposition power splitter and preposition high pass filter, the first amplifier be connected with lowpass pre-filter and the second amplifier be connected with preposition high pass filter, the rearmounted high pass filter be connected with the first amplifier electric, the rearmounted low pass filter that is connected with the second amplifier electric; The beneficial effects of the utility model are: the GNSS signal of many satellites be divided into two frequency ranges to go forward side by side row relax, improve transponder to the suppression of noise and jamproof ability, solve the support of transponder to multi-satellite system.
Description
Technical field
The utility model relates to GLONASS (Global Navigation Satellite System) technical field, and more particularly, the utility model relates to the signal retransmission unit of multi-satellite system.
Background technology
Satellite signal transponder to be incorporated into by satellite-signal by signal retransmission unit to receive satellite or the more weak place of satellite-signal, guarantee do not having satellite or the weak area of satellite-signal also can receive GNSS satellite signal, for debugging, scientific research, indoor navigation etc.
With reference to shown in Fig. 1, be the structural representation of traditional signal retransmission unit, it is formed primarily of three parts: 1, reception antenna; 2, signal repeater; 3, transmitting antenna.
Composition graphs 2, be the structural representation of signal repeater, transponder is generally made up of single branch road, and preposition band pass filter, middle gain supplement amplifier, rearmounted band pass filter and last numerical-control attenuator composition.
The satellite-signal that preposition filter mainly receives antenna carries out filtering process again, the noise outside band is carried out suppression again, guarantees that amplifying circuit below amplifies targetedly to useful frequency; Amplifier mainly plays the amplification process to signal, is generally the amplifier in broadband; Postfilter is mainly to the frequency-selecting process that the overall amplifying signal after amplifier carries out again, and numerical-control attenuator is mainly different according to the supplementary requirement of actual use scenes to different gains, carries out the decay to signal.
Such design Problems existing: 1, filter cannot adapt to wide band design, the frequency band that the GNSS signal as many satellites relates to is very wide, and the design of filter cannot use wide band demand; 2, the design of single branch road, amplifies process to the signal of whole frequency band, bad to the noise suppression effect outside band, causes the burden of the signal receiver demodulation of forwarding.
Utility model content
The purpose of this utility model is the deficiency overcoming above-mentioned technology, a kind of signal retransmission unit of multi-satellite system is provided, the GNSS signal of many satellites is divided into two frequency ranges to go forward side by side row relax by this device, improve transponder to the suppression of noise and jamproof ability, solve the support of transponder to multi-satellite system.
The technical solution of the utility model is achieved in that a kind of signal retransmission unit of multi-satellite system, is made up of reception antenna, signal repeater and transmitting antenna, and its improvements are, described signal repeater comprises:
At least one preposition power splitter, the satellite-signal for being received by reception antenna is divided into the first tributary signal and the second tributary signal;
Be connected to the lowpass pre-filter on described preposition power splitter and preposition high pass filter, the cut-off frequency of described lowpass pre-filter is f1, the signal of frequency higher than f1 can be peeled off; The cut-off frequency of described preposition high pass filter is f1, the signal of frequency lower than f1 can be peeled off;
The first amplifier be connected with lowpass pre-filter and the second amplifier be connected with preposition high pass filter;
The rearmounted high pass filter be connected with the first amplifier electric, the cut-off frequency of this rearmounted high pass filter is f2, and 0<f2<f1;
The rearmounted low pass filter be connected with the second amplifier electric, the cut-off frequency of this rearmounted low pass filter is f3, and f3>f1; And
The rearmounted power splitter be simultaneously connected with described rearmounted high pass filter and rearmounted low pass filter, this rearmounted power splitter is used for treated first tributary signal and the second tributary signal to be combined into a road signal.
Preferably, the cut-off frequency of described lowpass pre-filter and the cut-off frequency f1=1.35GHz of preposition high pass filter, the cut-off frequency f2=1.05GHz of described rearmounted high pass filter, the cut-off frequency f3=1.75GHz of described rearmounted low pass filter.
Preferably, described rearmounted power splitter electrically connect a numerical-control attenuator, this numerical-control attenuator is used for carrying out Attenuation adjustable to signal.
Preferably, described signal repeater comprises three preposition power splitters, be respectively the first preposition power splitter, the second preposition power splitter and the 3rd preposition power splitter, described second preposition power splitter and the 3rd preposition power splitter are connected electrically on the first preposition power splitter, second preposition power splitter is used for the first tributary signal to be divided into the 3rd tributary signal and the 4th tributary signal, and the 3rd preposition power splitter is used for the second tributary signal to be divided into the 5th tributary signal and the 6th tributary signal.
Preferably, described rearmounted power splitter comprises the first rearmounted power splitter, the second rearmounted power splitter and the 3rd rearmounted power splitter, first rearmounted power splitter is used for synthesize the first conjunction road signal through process the 3rd tributary signal and the 4th tributary signal, second rearmounted power splitter is used for synthesize the second conjunction road signal through process the 5th tributary signal and the 6th tributary signal, and the 3rd rearmounted power splitter is used for closing road signal and second by first and closes road signal syntheses for sum total road signal.
Preferably, described 3rd rearmounted power splitter electrically connect a numerical-control attenuator, this numerical-control attenuator is used for carrying out Attenuation adjustable to sum total road signal.
The beneficial effects of the utility model are: the signal processing mode of patent utilization simulation of the present invention, the GNSS signal that antenna is received, be separated respectively, frequency-selecting, amplification, synthesis, signal transacting is targetedly carried out to useful GNSS signal, the noise effectively solved outside band that amplifier causes is introduced, and the interference of other noises outside, thus the signal repeater guaranteed is to the support of multi-satellite system, arrives good signal forwarding capability; Hinge structure, the split-band processing mode that the present invention adopts and high pass add the technological means of low-pass filtering frequency-selecting, improve transponder to the suppression of noise and jamproof ability, solve the support of transponder to multi-satellite system, the signal making receiver receive transponder carries out demodulation and is more prone to.
Accompanying drawing explanation
Fig. 1 is the structural representation of traditional signal retransmission unit;
Fig. 2 is the structural representation of traditional transponder;
Fig. 3 is functional-block diagram of the present utility model;
Fig. 4 is a specific embodiment figure of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model will be further described.
The utility model discloses a kind of signal retransmission unit of multi-satellite system, the frequency band that the GNSS signal being intended to solve many satellites in prior art relates to is very wide, the design of filter cannot use the problem of wide band demand, the design that also can solve single branch road in addition amplifies process to the signal of whole frequency band, bad to the noise suppression effect outside band, cause the problem of the burden of the signal receiver demodulation of forwarding.
The signal retransmission unit of multi-satellite system of the present utility model is made up of reception antenna, signal repeater and transmitting antenna, and with reference to shown in Fig. 3, signal repeater comprises:
Preposition power splitter, be connected to lowpass pre-filter on described preposition power splitter and preposition high pass filter, the first amplifier be connected with lowpass pre-filter and the second amplifier be connected with preposition high pass filter, the rearmounted high pass filter be connected with the first amplifier electric, the rearmounted low pass filter that is connected with the second amplifier electric.
Particularly, the quantity of preposition power splitter can be determined according to actual conditions, then be set with a preposition power splitter in the present embodiment, the satellite-signal that this preposition power splitter is used for reception antenna receives is divided into the first tributary signal and the second tributary signal, first tributary signal is the signal of low-frequency band, second tributary signal is the signal of high frequency band, processes the first tributary signal and the second tributary signal respectively by two branch roads.
The cut-off frequency of lowpass pre-filter is f1, and the signal of frequency higher than f1 can be peeled off, the cut-off frequency of preposition high pass filter is f1, the signal of frequency lower than f1 can be peeled off; In the present embodiment, the cut-off frequency of lowpass pre-filter and the cut-off frequency f1=1.35GHz of preposition high pass filter.In addition, the cut-off frequency of rearmounted high pass filter is f2, and 0<f2<f1, in the present embodiment, the cut-off frequency f2=1.05GHz of rearmounted high pass filter; The cut-off frequency of rearmounted low pass filter is f3, and f3>f1, in the present embodiment, the cut-off frequency f3=1.75GHz of rearmounted low pass filter.
Transponder also comprises the rearmounted power splitter be simultaneously connected with described rearmounted high pass filter and rearmounted low pass filter in addition, and this rearmounted power splitter is used for treated first tributary signal and the second tributary signal to be combined into a road signal.Rearmounted power splitter electrically connect a numerical-control attenuator, this numerical-control attenuator is used for carrying out Attenuation adjustable to signal.
We are described operation principle of the present utility model.Wherein, the satellite-signal that reception antenna receives is divided into the first tributary signal and the second tributary signal by preposition power splitter, and the first tributary signal is the signal of low-frequency band, and the second tributary signal is the signal of high frequency band; The cut-off frequency of lowpass pre-filter and the cut-off frequency f1=1.35GHz of preposition high pass filter, therefore, the signal of frequency higher than 1.35GHz is effectively peeled off by lowpass pre-filter, and the signal of frequency lower than 1.35GHz is effectively peeled off by preposition high pass filter.The signal being only the low-frequency band after by lowpass pre-filter that first amplifier amplifies, the signal be only by preposition high pass filter that the second amplifier amplifies; Low band signal is after the first amplifier, and the signal of 0-1.35GHz is all amplified by the first amplifier, and the cut-off frequency of rearmounted high pass filter is 1.05GHz, has carried out frequency-selecting 1.05GHz-1.35GHz targetedly by the signal after rearmounted high pass filter; The signal of same high frequency band is after the second amplifier, the ultra-high frequency signal of more than 1.35GHz is all amplified by the second amplifier, the cut-off frequency of rearmounted low pass filter is 1.75GHz, has carried out frequency-selecting 1.35GHz-1.75GHz targetedly by the signal of rearmounted low pass filter; The signal of high and low two frequency bands carries out frequency-selecting targetedly and after amplifying process, synthesizes a road signal, then carry out Attenuation adjustable through numerical-control attenuator, complete the process of the GNSS signal to whole frequency band through rearmounted power splitter.
The transponder that the signal transacting realized by these patent means is completed, achieve wide band GNSS signal forward process, make use of the process different to high and low frequency band, ensure that and the specific aim of useful signal is amplified, make use of the mode of high pass+low pass in addition, solve the problem of band pass filter bandwidth, effectively solve the support of transponder to multi-satellite system.
In addition, the above-mentioned implementation of the utility model can adopt more branch road to carry out processing signals, to solve stripping and the filtering of non-useful signal in frequency band, concrete, with reference to shown in Fig. 4, signal repeater comprises three preposition power splitters, be respectively the first preposition power splitter, second preposition power splitter and the 3rd preposition power splitter, second preposition power splitter and the 3rd preposition power splitter are connected electrically on the first preposition power splitter, the satellite-signal that first preposition power splitter is used for reception antenna receives is divided into the first tributary signal and the second tributary signal, second preposition power splitter is used for the first tributary signal to be divided into the 3rd tributary signal and the 4th tributary signal, 3rd preposition power splitter is used for the second tributary signal to be divided into the 5th tributary signal and the 6th tributary signal.Therefore, in the present embodiment, there are four branch roads altogether process the signal after separation, Article 1, branch road and the 3rd route lowpass pre-filter, amplifier, rearmounted high pass filter are formed, and Article 2 branch road and Article 4 prop up the preposition high pass filter of route, amplifier, rearmounted low pass filter formation.
Rearmounted power splitter comprises the first rearmounted power splitter, second rearmounted power splitter and the 3rd rearmounted power splitter, first rearmounted power splitter is used for synthesize the first conjunction road signal through process the 3rd tributary signal and the 4th tributary signal, second rearmounted power splitter is used for synthesize the second conjunction road signal through process the 5th tributary signal and the 6th tributary signal, 3rd rearmounted power splitter is used for closing road signal and second by first and closes road signal syntheses for sum total road signal, 3rd rearmounted power splitter electrically connect a numerical-control attenuator, this numerical-control attenuator is used for carrying out Attenuation adjustable to sum total road signal, complete the process of the GNSS signal to whole frequency band.
The signal processing mode of patent utilization simulation of the present invention, the GNSS signal that antenna is received, be separated respectively, frequency-selecting, amplification, synthesis, signal transacting is targetedly carried out to useful GNSS signal, the noise effectively solved outside band that amplifier causes is introduced, and the interference of other noises outside, thus the signal repeater guaranteed is to the support of multi-satellite system, arrives good signal forwarding capability; Hinge structure, the split-band processing mode that the present invention adopts and high pass add the technological means of low-pass filtering frequency-selecting, improve transponder to the suppression of noise and jamproof ability, solve the support of transponder to multi-satellite system, the signal making receiver receive transponder carries out demodulation and is more prone to.
Described above is only preferred embodiment of the present utility model, and above-mentioned specific embodiment is not to restriction of the present utility model.In technological thought category of the present utility model, can occur various distortion and amendment, all those of ordinary skill in the art, according to describing retouching, the amendment made above or equivalent replacing, all belong to the scope that the utility model is protected.
Claims (6)
1. a signal retransmission unit for multi-satellite system, is made up of reception antenna, signal repeater and transmitting antenna, it is characterized in that, described signal repeater comprises:
At least one preposition power splitter, the satellite-signal for being received by reception antenna is divided into the first tributary signal and the second tributary signal;
Be connected to the lowpass pre-filter on described preposition power splitter and preposition high pass filter, the cut-off frequency of described lowpass pre-filter is f1, the signal of frequency higher than f1 can be peeled off; The cut-off frequency of described preposition high pass filter is f1, the signal of frequency lower than f1 can be peeled off;
The first amplifier be connected with lowpass pre-filter and the second amplifier be connected with preposition high pass filter;
The rearmounted high pass filter be connected with the first amplifier electric, the cut-off frequency of this rearmounted high pass filter is f2, and 0<f2<f1;
The rearmounted low pass filter be connected with the second amplifier electric, the cut-off frequency of this rearmounted low pass filter is f3, and f3>f1; And
The rearmounted power splitter be simultaneously connected with described rearmounted high pass filter and rearmounted low pass filter, this rearmounted power splitter is used for treated first tributary signal and the second tributary signal to be combined into a road signal.
2. the signal retransmission unit of multi-satellite system according to claim 1, it is characterized in that: the cut-off frequency of described lowpass pre-filter and the cut-off frequency f1=1.35GHz of preposition high pass filter, the cut-off frequency f2=1.05GHz of described rearmounted high pass filter, the cut-off frequency f3=1.75GHz of described rearmounted low pass filter.
3. the signal retransmission unit of multi-satellite system according to claim 1, is characterized in that: described rearmounted power splitter electrically connect a numerical-control attenuator, and this numerical-control attenuator is used for carrying out Attenuation adjustable to signal.
4. the signal retransmission unit of multi-satellite system according to claim 1, it is characterized in that: described signal repeater comprises three preposition power splitters, be respectively the first preposition power splitter, the second preposition power splitter and the 3rd preposition power splitter, described second preposition power splitter and the 3rd preposition power splitter are connected electrically on the first preposition power splitter, second preposition power splitter is used for the first tributary signal to be divided into the 3rd tributary signal and the 4th tributary signal, and the 3rd preposition power splitter is used for the second tributary signal to be divided into the 5th tributary signal and the 6th tributary signal.
5. the signal retransmission unit of multi-satellite system according to claim 4, it is characterized in that: described rearmounted power splitter comprises the first rearmounted power splitter, the second rearmounted power splitter and the 3rd rearmounted power splitter, first rearmounted power splitter is used for synthesize the first conjunction road signal through process the 3rd tributary signal and the 4th tributary signal, second rearmounted power splitter is used for synthesize the second conjunction road signal through process the 5th tributary signal and the 6th tributary signal, and the 3rd rearmounted power splitter is used for closing road signal and second by first and closes road signal syntheses for sum total road signal.
6. the signal retransmission unit of multi-satellite system according to claim 5, is characterized in that: described 3rd rearmounted power splitter electrically connect a numerical-control attenuator, and this numerical-control attenuator is used for carrying out Attenuation adjustable to sum total road signal.
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| CN201420785276.0U CN204349986U (en) | 2014-12-11 | 2014-12-11 | A kind of signal retransmission unit of multi-satellite system |
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| CN201420785276.0U CN204349986U (en) | 2014-12-11 | 2014-12-11 | A kind of signal retransmission unit of multi-satellite system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106501817A (en) * | 2016-12-13 | 2017-03-15 | 北京奥博泰科技有限公司 | A kind of real-time satellite-signal retransmission unit that precise relay position is provided |
| CN106921358A (en) * | 2015-12-28 | 2017-07-04 | 鸿富锦精密工业（深圳）有限公司 | Power distribution combiner circuit with filter function |
| CN108667474A (en) * | 2018-04-13 | 2018-10-16 | 辽宁工业大学 | A kind of communication solar energy signal converting, amplifying device and application method |
| CN111245502A (en) * | 2020-01-17 | 2020-06-05 | 中国科学院国家授时中心 | Multimode pseudolite system |
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2014
- 2014-12-11 CN CN201420785276.0U patent/CN204349986U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106921358A (en) * | 2015-12-28 | 2017-07-04 | 鸿富锦精密工业（深圳）有限公司 | Power distribution combiner circuit with filter function |
| CN106501817A (en) * | 2016-12-13 | 2017-03-15 | 北京奥博泰科技有限公司 | A kind of real-time satellite-signal retransmission unit that precise relay position is provided |
| CN106501817B (en) * | 2016-12-13 | 2023-08-11 | 北京奥博泰科技有限公司 | Satellite signal forwarding device for providing accurate forwarding position in real time |
| CN108667474A (en) * | 2018-04-13 | 2018-10-16 | 辽宁工业大学 | A kind of communication solar energy signal converting, amplifying device and application method |
| CN108667474B (en) * | 2018-04-13 | 2021-07-09 | 辽宁工业大学 | Solar signal switching and amplifying device for communication and use method |
| CN111245502A (en) * | 2020-01-17 | 2020-06-05 | 中国科学院国家授时中心 | Multimode pseudolite system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Guangzhou Geoelectron Science & Technology Company Limited Assignor: Zhao Xiang Contract record no.: 2017440000080 Denomination of utility model: Signal forwarding device of multi-satellite system Granted publication date: 20150520 License type: Exclusive License Record date: 20170413 |