CN103675855B - A kind of GPS-P code generating method guided based on code week end moment L1CA - Google Patents
A kind of GPS-P code generating method guided based on code week end moment L1CA Download PDFInfo
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- CN103675855B CN103675855B CN201310629195.1A CN201310629195A CN103675855B CN 103675855 B CN103675855 B CN 103675855B CN 201310629195 A CN201310629195 A CN 201310629195A CN 103675855 B CN103675855 B CN 103675855B
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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
- G01S19/24—Acquisition or tracking or demodulation of signals transmitted by the system
- G01S19/30—Acquisition or tracking or demodulation of signals transmitted by the system code related
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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
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Abstract
A kind of GPS-P code generating method guided based on code week end moment L1CA, by code synchronous/half chip synchronization signal generator module, P code guide generation module and 2us/2ms counting module three part to form, after L1CA Code acquisition completes, wait for that 1.5s hopping edge place implements to guide to P code, produce advanced, timely, delayed three road identical P code chips, avoid complicated X1A/X1B/X2A/X2B code table address computation generting machanism, acquisition speed is fast, has broad application prospects.
Description
Technical field
The present invention relates to a kind of GPS-P code generating method guided based on code week end moment L1CA, after L1CA Code acquisition completes, wait for that 1.5s hopping edge place implements to guide to P code, produce advanced, timely, delayed three road P codes, three road intersymbols, apart from being half chip, belong to satellite application technical field.
Background technology
Along with the expansion of scope and the raising of scientific and technological level are explored in mankind's activity, satellite navigation system has become the important infrastructure of information systems, becomes the guardian technique support system being directly connected to national economy.Most widely used in the world is at present GPS, gps satellite launches L1, L2 two-way spread-spectrum signal simultaneously, the centre frequency of carrier wave is respectively 1575.42MHz, 1227.60MHz, L1 carrier wave raises navigation message processed, CA code and P code, L2 carrier wave raises navigation message processed, P code and C code, wherein civil GPS receivers can only utilize the CA code on L1 carrier wave usually, and the application of military GPS CA code and P code is all more extensive.
GPS P code actual cycle was 38 weeks, and what modulate in satellite-signal is shortened code, and the code cycle is 7 days, and bit rate is 10.23Mcps.Compared with CA code, P code has relatively short the code wide and longer cycle, and thus GPS can measure P code phase usually more accurately, and the positioning precision of P code is higher.But, because the P code cycle is very long, if GPS carrys out by related operation the code phase in turn searching for P code in Received signal strength one by one, then search for, catch P coded signal and will need for a long time.The CA code period ratio P code cycle is much short, and each yard of all start time, CA code and P code are all alignment, so receiver is all generally first search for, catch CA code, then from CA coded signal, obtain current time, and estimate the phase place of P code with this, thus catch P code quickly again.Just for this reason, CA code originally full name is thick catch code (or coarse search code), and P code is then called smart code.
When GPS catches P code, P code generator occupies very important status in whole link, the mode of tradition reproduction P code is that L1CA Code acquisition is when completing, by the code phase of known CA code, the code phase of P code is calculated by series of complex computing, a large amount of arithmetic operations causes the consumption of a large amount of logical resource, makes the running frequency of device be restricted simultaneously, has certain limitation.
Summary of the invention
The technical matters that the present invention solves: overcome the deficiencies in the prior art, a kind of GPS-P code generating method guided based on code week end moment L1CA is provided, this P code generator is after L1CA Code acquisition completes, wait for that this special occasion of 1.5s hopping edge implements to guide to P code, produce advanced, timely, delayed three road P codes, three road intersymbols distances are half chip, avoid loaded down with trivial details computing, save a large amount of logical resource, can be used for design GPS dual-frequency receiver, be particularly useful for the design of hardware resource anxiety, practical.
Technical solution of the present invention is:
A kind of GPS-P code generating method guided based on code week end moment L1CA, comprise code synchronous/half chip synchronization signal generator module, P code guide generation module and counting module, wherein P code guides generation module to comprise again code table address counter X1A, X1B, X2A and X2B and counter X1 and X2, comprises step as follows:
(1) input code frequency control word and code phase control word, and a yard NCO accumulation operations is carried out to it, generated code NCO accumulation amount is 1.;
(2) 1. hopping edge operation is asked for the code NCO accumulation amount generated in step (1), generate chip synchronizing signal 2. with half chip synchronization signal 3.;
(3) under half chip synchronization signal driving 3., E road, P road and L road GPS-P code is generated;
(4) in the hopping edge moment in 1.5s code week, utilize the L1CA code of catching to guide the P code generated in step (3) and generate GPS-P code accurately, and return guiding complement mark; Described E, P and L road GPS-P intersymbol is divided into half chip;
(5) under the driving 2. of chip synchronization signal, chip carries out cycle accumulor counting, obtain respectively the Z/V counting group that exports as time scalar 4., 2us counting 5. with 2ms counting 6..
Described code synchronizing signal and half chip synchronization signal generating method as follows:
A () asks for hopping edge to code NCO accumulation amount, generate half chip synchronization signal;
B () asks for " negative-just " hopping edge to code NCO accumulation amount, generated code synchronizing signal.
Described to ask in the process of " negative-just " hopping edge generated code synchronizing signal: code phase control word adds by each 2ms end moment carries out code phase in yard NCO accumulation amount and adjust in real time, whether discrimination code phase control words is negative value simultaneously, when it is negative value, and the moment adding code phase control word causes the overflow position saltus step of yard NCO accumulation amount, then do not produce a yard synchronizing signal.
In described step (3), the generative process of GPS-P code is as follows:
A () code table address counter X1A, X2A carry out 0 ~ 4091 counting, code table address counter X1B, X2B carry out 0 ~ 4092 counting, count status value is code table address, look into the code value that GPS-P code table obtains X1A, X1B, X2A, X2B, and mould 2 and operation are carried out respectively to X1A, X1B and X2A, X2B, obtain counter X1 code value sum counter X2 code value;
B () chip of counter X1 under the driving 2. of chip synchronization signal carries out 0 ~ 15344999 counting, the chip of counter X2 carries out 0 ~ 15345036 counting, export reset signal respectively to code table address counter X1A, X1B, X2A and X2B after counter counts is full, reset;
C () is according to the different satellites number of inserting, the code value of counter X2 is postponed and is added with counter X1 code value XOR under 3. half chip synchronization signal drives, obtain the GPS-P code value on E road, the GPS-P code value on E road is postponed, obtain the GPS-P code on P road and L road respectively.
The bootstrap technique mode of L1CA code in described step (4) to P code is as follows:
After L1CA Code acquisition completes, the 1.5s code week count value Z_in guiding commencing signal and current L1CA code module is inserted to P code generator module, the initial value of the chip count of X1 being arranged V is 0, the initial value of the chip count of X2 is set to V2=15345037-Z_in × 37, when nearest 1.5s code week arrives in hopping edge, code table address counter X1A, X1B, X2A, X2B are resetted, by the time when the chip count V2 of X2 is 0, export three roads GPS-P code accurately, guiding completes, and returns guiding complement mark; Described code table address counter X1A and X2A counting region are 0 ~ 4091, code table address counter X1B and X2B counting region are 0 ~ 4092 counting.
The beneficial effect of the present invention compared with conventional art:
(1) the present invention is after L1CA Code acquisition completes, and waits for that this special occasion of 1.5s hopping edge implements to guide to P code and produces P code, avoid complicated X1A/X1B/X2A/X2B code table address computation generting machanism, simplified operation, save FPGA internal logic resource.
(2) the present invention produce (Early) in advance, in time (Prompt), delayed (Later) three tunnel be spaced apart the P code of half chip, search for simultaneously, accelerate search speed.
Accompanying drawing explanation
Fig. 1 is the inventive method process flow diagram;
Fig. 2 is the guiding sequential chart of L1CA code of the present invention to P code;
Fig. 3 is that code synchronizing signal/half chip synchronization signal produces principle schematic;
Fig. 4 is P code generating principle schematic diagram;
Fig. 5 is Z/V counter principle schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
A kind of GPS-P code generating method guided based on code week end moment L1CA provided by the invention, can be used for designing the GPS dual-frequency navigation receiver higher to the requirement of hardware resource use amount.The present invention, after L1CA Code acquisition completes, waits for that nearest 1.5s hopping edge place implements to guide to P code, produces the P code that advanced, timely, delayed three tunnels are spaced apart half chip, search for simultaneously, avoid loaded down with trivial details computing, save logical resource and search speed.
As shown in Figure 1, a kind of GPS-P code generating method guided based on code week end moment L1CA, comprise code synchronous/half chip synchronization signal generator module, P code guide generation module and counting module, wherein P code guides generation module to comprise again code table address counter X1A, X1B, X2A and X2B and counter X1 and X2, and concrete steps are as follows:
(1) input code frequency control word and code phase control word, and a yard NCO(digital controlled oscillator is carried out to it) accumulation operations, generated code NCO accumulation amount is 1.;
(2) 1. hopping edge operation is asked for the code NCO accumulation amount generated in step (1), generate chip synchronizing signal 2. with half chip synchronization signal 3.; As shown in Figure 3, described code synchronizing signal and half chip synchronization signal generating method as follows:
A () asks for hopping edge to code NCO accumulation amount, generate half chip synchronization signal;
B () asks for " negative-just " hopping edge to code NCO accumulation amount, generated code synchronizing signal.
Ask in the process of " negative-just " hopping edge generated code synchronizing signal: code phase control word adds by each 2ms end moment carries out code phase in yard NCO accumulation amount and adjust in real time, whether discrimination code phase control words is negative value simultaneously, when it is negative value, and the moment adding code phase control word causes the overflow position saltus step of yard NCO accumulation amount, then do not produce a yard synchronizing signal.
(3) under half chip synchronization signal driving 3. (such as: temporarily carry out shifting function at high impulse), generate E(advanced code synchronizing signal) road, P(instantaneous code synchronizing signal) road and the delayed code synchronizing signal of L() road GPS-P code;
As shown in Figure 4, the generative process of GPS-P code is as follows:
A () code table address counter X1A, X2A carry out 0 ~ 4091 counting, code table address counter X1B, X2B carry out 0 ~ 4092 counting, count status value is code table address, look into the code value that GPS-P code table obtains X1A, X1B, X2A, X2B, and mould 2 and operation are carried out respectively to X1A, X1B and X2A, X2B, obtain counter X1 code value sum counter X2 code value;
B () chip of counter X1 under the driving 2. of chip synchronization signal carries out 0 ~ 15344999 counting, the chip of counter X2 carries out 0 ~ 15345036 counting, export reset signal respectively to code table address counter X1A, X1B, X2A and X2B after counter counts is full, reset;
C () is according to the different satellites number of inserting, the code value of counter X2 is postponed and is added with counter X1 code value XOR under 3. half chip synchronization signal drives, obtain the GPS-P code value on E road, the GPS-P code value on E road is postponed, obtain the GPS-P code on P road and L road respectively.
As shown in Figure 2, the bootstrap technique mode of L1CA code to P code is as follows:
After L1CA Code acquisition completes, the 1.5s code week count value Z_in guiding commencing signal and current L1CA code module is inserted to P code generator module, the initial value of the chip count of X1 being arranged V is 0, the initial value of the chip count of X2 is set to V2=15345037-Z_in × 37, when nearest 1.5s code week arrives in hopping edge, code table address counter X1A, X1B, X2A, X2B are resetted, by the time when the chip count V2 of X2 is 0, export three roads GPS-P code accurately, guiding completes, and returns guiding complement mark; Described code table address counter X1A and X2A counting region are 0 ~ 4091, code table address counter X1B and X2B counting region are 0 ~ 4092 counting.
(4) in (1 PN-code capture) the hopping edge moment in 1.5s code week, utilize the L1CA code of catching to guide the P code generated in step (3) and generate GPS-P code accurately, and return guiding complement mark; Described E, P and L road GPS-P intersymbol is divided into half chip;
(5) under the driving 2. of chip synchronization signal, chip carries out cycle accumulor counting, obtains Z/V(code week of exporting as time scalar and chip respectively) counting group 4., 2us counting 5. with 2ms counting 6..
As shown in Figure 5, the logical organization of Z/V counter.
(1) under the driving of " code synchronizing signal ", carry out V counting, counting region is 0 ~ 15344999, and meter is completely a code week (1.5s), and output carry signal gives " Z counter ";
(2) under V counts carry signal driving, carry out Z counting (1.5s counting), counting region is 0 ~ 403199(1 week).
The unspecified part of the present invention belongs to general knowledge as well known to those skilled in the art.
Claims (5)
1. the GPS-P code generating method guided based on code week end moment L1CA, make use of code synchronous/half chip synchronization signal generator module, P code guide generation module and counting module, wherein P code guides generation module to comprise again code table address counter X1A, X1B, X2A and X2B and counter X1 and X2, it is characterized in that step is as follows:
(1) input code frequency control word and code phase control word, and a yard NCO accumulation operations is carried out to it, generated code NCO accumulation amount is 1.;
(2) 1. hopping edge operation is asked for the code NCO accumulation amount generated in step (1), generate chip synchronizing signal 2. with half chip synchronization signal 3.;
(3) under half chip synchronization signal driving 3., E road, P road and L road GPS-P code is generated;
(4) in the hopping edge moment in 1.5s code week, utilize the L1CA code of catching to guide the P code generated in step (3) and generate GPS-P code accurately, and return guiding complement mark; Described E, P and L road GPS-P intersymbol is divided into half chip;
(5) under the driving 2. of chip synchronization signal, chip carries out cycle accumulor counting, obtain respectively the Z/V counting group that exports as time scalar 4., 2us counting 5. with 2ms counting 6..
2. according to claim 1 a kind of based on code week end moment L1CA guide GPS-P code generating method, it is characterized in that: described code synchronizing signal and half chip synchronization signal generating method as follows:
A () asks for hopping edge to code NCO accumulation amount, generate half chip synchronization signal;
B () asks for " negative-just " hopping edge to code NCO accumulation amount, generated code synchronizing signal.
3. a kind of GPS-P code generating method guided based on code week end moment L1CA according to claim 2, it is characterized in that: described to ask in the process of " negative-just " hopping edge generated code synchronizing signal: code phase control word adds by each 2ms end moment carries out code phase in yard NCO accumulation amount and adjust in real time, whether discrimination code phase control words is negative value simultaneously, when it is negative value, and the moment adding code phase control word causes the overflow position saltus step of yard NCO accumulation amount, then do not produce a yard synchronizing signal.
4. a kind of GPS-P code generating method guided based on code week end moment L1CA according to claim 1, is characterized in that: in described step (3), the generative process of GPS-P code is as follows:
A () code table address counter X1A, X2A carry out 0 ~ 4091 counting, code table address counter X1B, X2B carry out 0 ~ 4092 counting, count status value is code table address, look into the code value that GPS-P code table obtains X1A, X1B, X2A, X2B, and mould 2 and operation are carried out respectively to X1A, X1B and X2A, X2B, obtain counter X1 code value sum counter X2 code value;
B () chip of counter X1 under the driving 2. of chip synchronization signal carries out 0 ~ 15344999 counting, the chip of counter X2 carries out 0 ~ 15345036 counting, export reset signal respectively to code table address counter X1A, X1B, X2A and X2B after counter counts is full, reset;
C () is according to the different satellites number of inserting, the code value of counter X2 is postponed and is added with counter X1 code value XOR under 3. half chip synchronization signal drives, obtain the GPS-P code value on E road, the GPS-P code value on E road is postponed, obtain the GPS-P code on P road and L road respectively.
5. a kind of GPS-P code generating method guided based on code week end moment L1CA according to claim 1, is characterized in that: the bootstrap technique mode of the L1CA code in described step (4) to P code is as follows:
After L1CA Code acquisition completes, the 1.5s code week count value Z_in guiding commencing signal and current L1CA code module is inserted to P code generator module, the initial value of the chip count of X1 being arranged V is 0, the initial value of the chip count of X2 is set to V2=15345037-Z_in × 37, when nearest 1.5s code week arrives in hopping edge, code table address counter X1A, X1B, X2A, X2B are resetted, by the time when the chip count V2 of X2 is 0, export three roads GPS-P code accurately, guiding completes, and returns guiding complement mark; Described code table address counter X1A and X2A counting region are 0 ~ 4091, code table address counter X1B and X2B counting region are 0 ~ 4092 counting.
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| CN105467411A (en) * | 2015-12-04 | 2016-04-06 | 航天恒星科技有限公司 | A signal capture method and apparatus |
| CN106405575B (en) * | 2016-08-24 | 2019-03-19 | 北京华力创通科技股份有限公司 | A kind of P code generator of GPS system generates system and method |
| CN114779284B (en) * | 2022-03-29 | 2022-09-20 | 湖南卫导信息科技有限公司 | Satellite navigation receiver military code signal capturing function test method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0501828A1 (en) * | 1991-02-28 | 1992-09-02 | Texas Instruments Incorporated | Method and system for a multi channel and search global position signal processor |
| JP2851693B2 (en) * | 1989-09-25 | 1999-01-27 | マグナヴォックス ガヴァメント アンド インダストリアル エレクトロニクス カンパニー | Received signal processing method in wide area positioning system |
| CN102116866A (en) * | 2009-12-31 | 2011-07-06 | 和芯星通科技(北京)有限公司 | Method and device for tracking global positioning system precision (GPS P) and/or Y code signal of full-cycle carrier |
| CN103152072A (en) * | 2013-01-31 | 2013-06-12 | 南京航空航天大学 | P code generating method at random time |
-
2013
- 2013-11-29 CN CN201310629195.1A patent/CN103675855B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2851693B2 (en) * | 1989-09-25 | 1999-01-27 | マグナヴォックス ガヴァメント アンド インダストリアル エレクトロニクス カンパニー | Received signal processing method in wide area positioning system |
| EP0501828A1 (en) * | 1991-02-28 | 1992-09-02 | Texas Instruments Incorporated | Method and system for a multi channel and search global position signal processor |
| CN102116866A (en) * | 2009-12-31 | 2011-07-06 | 和芯星通科技(北京)有限公司 | Method and device for tracking global positioning system precision (GPS P) and/or Y code signal of full-cycle carrier |
| CN103152072A (en) * | 2013-01-31 | 2013-06-12 | 南京航空航天大学 | P code generating method at random time |
Non-Patent Citations (1)
| Title |
|---|
| GPS P码信号反推产生算法的研究与仿真;于雪晖;《电子设计工程》;20120430;第20卷(第7期);第117-120页 * |
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