CN106772484B - Power ratio and carrier phase relationship method of adjustment between satellite navigation signals multi -components - Google Patents
Power ratio and carrier phase relationship method of adjustment between satellite navigation signals multi -components Download PDFInfo
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- CN106772484B CN106772484B CN201611241209.2A CN201611241209A CN106772484B CN 106772484 B CN106772484 B CN 106772484B CN 201611241209 A CN201611241209 A CN 201611241209A CN 106772484 B CN106772484 B CN 106772484B
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- G—PHYSICS
- G01—MEASURING; TESTING
- 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
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/35—Constructional details or hardware or software details of the signal processing chain
- G01S19/37—Hardware or software details of the signal processing chain
-
- G—PHYSICS
- G01—MEASURING; TESTING
- 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
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/24—Acquisition or tracking or demodulation of signals transmitted by the system
- G01S19/29—Acquisition or tracking or demodulation of signals transmitted by the system carrier including Doppler, related
-
- G—PHYSICS
- G01—MEASURING; TESTING
- 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
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/34—Power consumption
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Radio Relay Systems (AREA)
Abstract
Power ratio and carrier phase relationship method of adjustment between satellite navigation signals multi -components, permanent envelope look-up table is generated first and upper note to satellite-signal generates load, then control navigation signal generates load and receives and stores permanent envelope look-up table using the triplication redundancy reception latch cicuit with feedback branch, by Slice inside permanent envelope look-up table merging FPGA, navigation signal generation load is finally controlled using permanent envelope look-up table and generates navigation signal.The present invention is by carrying out triplication redundancy design to the circuit with feedback branch, correction after solving the problems, such as single-particle inversion, it can be corrected when permanent envelope look-up table is because of single-particle inversion, single-particle inversion will not be accumulated, and ensure that the steady and continuous of navigation signal is broadcast.
Description
Technical field
The present invention relates to Satellite Navigation Technique, power ratio and carrier wave phase between especially a kind of satellite navigation signals multi -components
Position relationship method of adjustment.
Background technique
Satellite navigation signals inside single frequency point there are multiple signal components, will in satellite navigation signals generating process
Multiple signal components synthesize complex signal orthogonal all the way by fixed permanent envelope look-up table, are then realized by orthogonal modulation
The generation of navigation signal, the method has the following shortcomings:
(1) multiple signal components are complex as by signal all the way by fixed permanent envelope look-up tables'implementation, cannot achieve letter
The adjustment of power ratio and carrier phase relationship between number component；
(2) influence of the fixed permanent envelope look-up table vulnerable to space single-particle inversion, look-up table are that navigation signal generates
In single-point, once look-up table is overturned by single-particle, then down navigation signal generate generate mistake, cause in navigation Service function
Disconnected, which can be solved by triplication redundancy, but be reinforced using three general mould design methods to critical registers, nothing
Method realizes error correcting function, leads to the in-orbit accumulation of single-particle inversion of permanent envelope look-up table, when the accumulation of a certain bit occurs two
When the single-particle inversion mistake of position, navigation signal, which generates, generates mistake.
Summary of the invention
Technical problem solved by the present invention is between having overcome the deficiencies of the prior art and provide satellite navigation signals multi -components
Power ratio and carrier phase relationship method of adjustment solve the power ratio and carrier phase that cannot achieve between signal component
The adjustment of relationship, when two or more single-particle inversion mistakes occurs in a certain bit accumulation, navigation signal, which generates, generates asking for mistake
Topic, power ratio and carrier phase relationship between the multiple signal components of navigation signal can be adjusted flexibly, have high reliablity,
It is not easily susceptible to the advantages of single-particle inversion influences.
The technical solution of the invention is as follows: power ratio and carrier phase relationship adjustment between satellite navigation signals multi -components
Method includes the following steps:
(1) permanent envelope look-up table is generated on ground；The permanent envelope look-up table includes that satellite navigation signals institute is important
Between power ratio and carrier phase, the multiple signal components according to existing for satellite navigation signals single frequency point generate all the way
Orthogonal complex signal, and carry out orthogonal modulation and obtain navigation signal；
(2) note on permanent envelope look-up table to navigation signal is generated into load, control navigation signal generates load use and has
The triplication redundancy of feedback branch receives latch cicuit and receives and stores permanent envelope look-up table, is then placed in permanent envelope look-up table
Slice inside FPGA；It is the reception lock with feedback branch that the triplication redundancy with feedback branch, which receives latch cicuit,
The triplication redundancy design for depositing circuit realizes that permanent three mould court verdict of envelope look-up table fed back to three moulds with feedback branch is superfluous
The remaining input terminal for receiving latch cicuit carries out input signal perseverance envelope look-up table using permanent three mould court verdict of envelope look-up table
Correction；The latch cicuit that receives is to realize that realization connects permanent envelope look-up table by d type flip flop, the LUT inside FPGA
Receive function；
(3) control navigation signal generates load and generates navigation signal using permanent envelope look-up table；
(4) when needing to change the power ratio and carrier phase between satellite navigation signals component, new permanent envelope is generated
Look-up table and it is upper note to satellite-signal generate load, be then transferred to step (2).
The method of the reception latch cicuit with feedback branch includes the following steps:
(1) it finds out and receives all triggers of latch cicuit；
(2) the set critical point for receiving latch cicuit trigger is disconnected, set port is then connected into low level；
(3) output signal of d type flip flop is connect to the input port of LUT in FPGA, realizes CPU merging；
(4) truth table of LUT is modified, until when the control signal that FPGA is written is effective and address is correct, LUT output is
The signal of ground merging, when the control invalidating signal or incorrect address that FPGA is written, LUT output is the electricity of input port 1
It is flat, then LUT output port is connect to the input port of d type flip flop.
The triplication redundancy for having feedback branch receives latch cicuit using TMRTool tool.
The advantages of the present invention over the prior art are that:
(1) present invention is by increasing grouting socket in permanent envelope look-up table, the case where not interrupting satellite navigation signals
It is lower that ground is allowed to change the content of look-up table by way of injecting order parameter, it solves ground control system and can not change and lead
The problem of permanent envelope look-up table of boat satellite, realize the spirit of the power ratio and carrier phase relationship between multiple signal components
Adjustment living；
(2) present invention is by carrying out triplication redundancy design to the circuit with feedback branch, after solving single-particle inversion
Correction problem, when permanent envelope look-up table because when single-particle inversion can be corrected, single-particle inversion will not be accumulated, and guarantee
The steady and continuous of navigation signal is broadcast.
Detailed description of the invention
Fig. 1 is power ratio and carrier phase relationship method of adjustment principle between a kind of satellite navigation signals multi -components of the present invention
Flow chart；
Fig. 2 is the FPGA reception and storage circuit of common permanent envelope look-up table；
Fig. 3 is that the FPGA of common permanent envelope look-up table is received and the full triplication redundancy of storage circuit designs；
Fig. 4 is that the FPGA of common permanent envelope look-up table is received and the part triplication redundancy of storage circuit designs；
Fig. 5 is the FPGA reception and storage circuit of the permanent envelope look-up table with feedback branch；
Fig. 6 is that the FPGA of the permanent envelope look-up table with feedback branch receives three mould of Quan Sanmo or part with storage circuit
Redundancy Design circuit.
Specific embodiment
Overcome the deficiencies in the prior art of the present invention proposes power ratio and carrier wave phase between a kind of satellite navigation signals multi -components
Position relationship method of adjustment, solves the adjustment that cannot achieve power ratio and carrier phase relationship between signal component, a certain
When two or more single-particle inversion mistakes occurs in bit accumulation, navigation signal, which generates, leads to the problem of mistake, can be adjusted flexibly
Power ratio and carrier phase relationship between the multiple signal components of navigation signal have high reliablity, are not easily susceptible to single-particle
The advantages of overturning influences, is with reference to the accompanying drawing illustrated the method for the present invention.
Power ratio and carrier phase relationship adjustment between satellite navigation signals multi -components disclosed by the invention as shown in Figure 1
Method flow diagram, comprising the following steps:
(1) navigation signal generates load and prestores a permanent envelope look-up table, realizes that multiple signal components of navigation signal are multiple
With.Assuming that the number of signal component is N in the method for the present invention, then the line number of permanent envelope look-up table is 2NRow, columns are 1 column；Often
The level of a signal component is+1 or -1, therefore 1bit binary number representation can be used in each signal component；N number of signal component can
Using N number of binary number representation；At a time, each signal component is a certain stationary state (+1 or -1), N number of signal
Binary number composed by component is m=0~2NAny one number between -1, the number correspond to the m in permanent envelope look-up table
The content that row the 1st arranges.Permanent envelope look-up table using between signal component power ratio and carrier phase relationship as input condition, benefit
With mature technology, such as POCET algorithm, generating line number is 2NRow, columns are the table of 1 column.
(2) it if terrestrial user needs to change the carrier phase relationship and power ratio of multiple signal components, generates new
Permanent envelope look-up table, and new permanent envelope look-up table is injected to navigation satellite using ground control system；
(3) navigation signal generates the new look-up table of payload reception, is placed in FPGA in sequence.
(4) it after FPGA receives permanent envelope look-up table, is stored in inside FPGA in Slice, design has the electricity of feedback branch
Realize the reception and storage of permanent envelope look-up table in road.
(5) circuit to above-mentioned with feedback branch carries out the design of part triplication redundancy；Three moulds in the method for the present invention are superfluous
Remaining design process is realized using TMRTool tool.
(6) by designing whether circuit check realizes that three mould court verdicts feed back to input terminal, guarantee three mould court verdicts
Input signal is corrected, realizes the correction of 1 bit single-particle inversion.
(7) look-up table of ground injection replaces original look-up table, realizes navigation signal constant enveloped modulation.
The implementation method of the circuit with feedback branch in step (4), includes the following steps:
(1) the permanent envelope look-up table that ground injection is received in the CPU of navigation satellite payload, then by the look-up table
Content is transmitted to FPGA；
(2) FPGA realizes the circuit that permanent envelope look-up table data is received from CPU；
(3) trigger all in the partial circuit is found out；
(4) FPGA that Fig. 2 show common permanent envelope look-up table is received and storage circuit, the circuit can realize reception ground
The permanent envelope of injection searches table function, carries out full triplication redundancy design to the partial circuit, obtains circuit as shown in Figure 3, such as
The FPGA that Fig. 3 show common permanent envelope look-up table is received and the full triplication redundancy of storage circuit designs；To the partial circuit into
The design of row part triplication redundancy, obtains circuit as shown in Figure 4, the FPGA for being illustrated in figure 4 common permanent envelope look-up table receive and
The part triplication redundancy of storage circuit designs；As can be seen that Fig. 3 and triplication redundancy shown in Fig. 4 design are only to LUT look-up table electricity
Road and D the device circuit that sets out have carried out triplication redundancy design, do not have feedback modifiers function, in the event of single-particle inversion, can lead
Cause the accumulation of mistake bit at any time.
(5) the set critical point of trigger is disconnected, set port is then connected into low level.
(6) it by the input port 1 of the LUT inside the output signal access FPGA of d type flip flop, is realized using feedback loop
CPU is placed in function, and the FPGA for being illustrated in figure 5 the permanent envelope look-up table with feedback branch is received and storage circuit.
(7) content for modifying the truth table of LUT, implements function such as:
If the control signal that CPU write enters FPGA is effective and address is correct, LUT output is the signal of ground merging；Such as
Fruit CPU write enter FPGA control invalidating signal or address it is incorrect, then LUT output be input port 1 level.
(8) LUT is exported to the input terminal of access d type flip flop.
The FPGA for being illustrated in figure 2 common permanent envelope look-up table is received and storage circuit, and it is superfluous to carry out complete three mould to the circuit
Remaining design obtains circuit as shown in Figure 3, carries out the design of part triplication redundancy to the circuit, obtains circuit as shown in Figure 4.
Although Fig. 3, Fig. 4 have carried out triplication redundancy design, but due to not having feedback loop, cannot achieve the amendment of single-particle inversion,
The Quan Sanmo or three mould of part of the FPGA reception and storage circuit that are illustrated in figure 6 the permanent envelope look-up table with feedback branch are superfluous
Remaining design circuit, Fig. 6 is due to there are feedback loop, there are still feedback loop, it can be achieved that single-particle inversion is repaired after triplication redundancy
Just.As can be seen that either full triplication redundancy design or part triplication redundancy design method, add critical registers
Gu cannot achieve error correcting function, lead to the in-orbit accumulation of single-particle inversion of permanent envelope look-up table, when a certain bit is accumulated
When there are two single-particle inversion mistakes, navigation signal, which generates, generates mistake.
Be illustrated in figure 5 with feedback branch permanent envelope look-up table FPGA receive and storage circuit, to the circuit into
The full triplication redundancy of row or the design of part triplication redundancy, obtain circuit as shown in Figure 6.As can be seen that the circuit will be after triplication redundancy
Output result feedback return input terminal, the single-particle inversion failure of input terminal is corrected, ensure that single-particle inversion will not
It accumulates at any time.
The content that description in the present invention is not described in detail belongs to the well-known technique of those skilled in the art.
Claims (3)
1. power ratio and carrier phase relationship method of adjustment between satellite navigation signals multi -components, it is characterised in that including walking as follows
It is rapid:
(1) permanent envelope look-up table is generated on ground；The permanent envelope look-up table include satellite navigation signals important
Power ratio and carrier phase, multiple signal components according to existing for satellite navigation signals single frequency point generate orthogonal all the way
Complex signal, and carry out orthogonal modulation and obtain navigation signal；
(2) note on permanent envelope look-up table to navigation signal is generated into load, control navigation signal generates load and uses with feedback
The triplication redundancy of branch receives latch cicuit and receives and stores permanent envelope look-up table, and then permanent envelope look-up table is placed in FPGA
Portion Slice；It is the reception latch cicuit with feedback branch that the triplication redundancy with feedback branch, which receives latch cicuit,
Triplication redundancy design, realize by permanent three mould court verdict of envelope look-up table feed back to the triplication redundancy with feedback branch receive
The input terminal of latch cicuit is corrected input signal perseverance envelope look-up table using permanent three mould court verdict of envelope look-up table；
The latch cicuit that receives is to be realized by d type flip flop, the LUT inside FPGA, realizes the reception function to permanent envelope look-up table
Energy；
(3) control navigation signal generates load and generates navigation signal using permanent envelope look-up table；
(4) it when needing to change the power ratio and carrier phase between satellite navigation signals component, generates new permanent envelope and searches
Table and it is upper note to satellite-signal generate load, be then transferred to step (2).
2. power ratio and carrier phase relationship method of adjustment between satellite navigation signals multi -components according to claim 1,
It is characterized by: the implementation method of the reception latch cicuit with feedback branch includes the following steps:
(1) it finds out and receives all triggers of latch cicuit；
(2) the set port for receiving latch cicuit trigger is disconnected, set port is then connected into low level；
(3) output signal of d type flip flop is connect to the input port of LUT in FPGA, realizes CPU merging；
(4) truth table of LUT is modified, until LUT output is ground when the control signal that FPGA is written is effective and address is correct
The signal of merging, when the control invalidating signal or incorrect address that FPGA is written, the electricity for the input port that LUT output is LUT
It is flat, then LUT output port is connect to the input port of d type flip flop.
3. power ratio and carrier phase relationship adjustment side between satellite navigation signals multi -components according to claim 1 or 2
Method, it is characterised in that: the triplication redundancy with feedback branch receives latch cicuit and uses TMRTool tool.
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| CN112684476B (en) * | 2020-11-23 | 2022-05-06 | 中国人民解放军国防科技大学 | Method for reducing false alarm rate of signal channel of navigation receiver and satellite-borne navigation receiver |
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