CN105137460A - Satellite navigation system baseband signal processing system and method - Google Patents
Satellite navigation system baseband signal processing system and method Download PDFInfo
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- CN105137460A CN105137460A CN201510534790.6A CN201510534790A CN105137460A CN 105137460 A CN105137460 A CN 105137460A CN 201510534790 A CN201510534790 A CN 201510534790A CN 105137460 A CN105137460 A CN 105137460A
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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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- 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
Abstract
The invention relates to a satellite navigation system baseband signal processing system, which belongs to the field of satellite navigation. The system comprises a multi-channel pre-processing module, a multi-channel data buffer module, a code generation/external interface module, a capturing channel, a tracking channel and a control module. The multi-channel pre-processing module is used for pre-processing an input signal. The multi-channel data buffer module forms one or more data buffer areas. The code generation/external interface module provides a pseudo-random code for the capturing channel and the tracking channel. The capturing channel captures data from a multi-channel data buffer area. The tracking channel tracks a signal in the multi-channel data buffer area. The control module carries out scene mode judgment according to signals in the capturing channel and the tracking channel, and determines configuration parameters for each module based on a judgment result. According to the invention, the configuration parameters of each module can be adjusted according to an environment state; hardware resources are flexibly and rationally allocated; and an optimum performance result is realized through the minimum hardware resource.
Description
Technical field
The present invention relates to field of satellite navigation, be specifically related to a kind of satellite navigation system baseband signal processing system and method.
Background technology
GPS (Global Position System) (GlobalNavigationSatelliteSystem, GNSS) is the adopted name providing autonomous geographical sterically defined satellite navigation system in global range of standard.GNSS allows small-sized electronic receiving equipment along in the scope of sight line, by regularly receiving the radio wave signal of satellite launch, measures the position (comprising longitude, latitude and height above sea level) residing for it, speed and time.
Up to now, U.S.'s nautical star (NAVSTAR) GPS (GPS) is the GNSS uniquely obtaining overall application.Current being in of Muscovite GLONASS (GLONASS) navigational system is estimated in the repair process of overall application in 2010.European Union's GALILEO positioning system (Galileopositioningsystem) is also in the initial deployment stage.China has planned and the dipper system set up, and prepares to utilize 30 medium ground orbit satellites and 5 geo-synchronous orbit satellites.
The GNSS signal received by antenna will be carried out amplifying and will be converted to intermediate frequency (IF) signal, then carry out digitized processing by analog to digital converter.The signal exported by radio frequency (RF) integrated circuit (IC) is 1-4 bit (bit), transfers to baseband I C, and baseband I C goes out the output signal of RFCO2 laser by coherent detection.Adopt the local satellite replica code produced to be multiplied by Received signal strength, then the peak value that integration obtains coherent signal is carried out to result.
In prior art, because largest passages number is by physical restriction, also namely receiver base band inside configures how many physical channels, just can only process at most the signal of how many satellites.For the multifrequency receiver of multisystem, each frequency for each satellite system is just needed to configure separately a RF front-end module and one group of passage.Along with the development of global navigation satellite technology, multisystem merges one of the development trend that is inevitable, if expand the physical channel quantity of receiver base band inside simply with the amalgamation mode of prior art, adapt to the needs that multiple GPS (Global Position System) merges, receiver scale then will inevitably be caused increasing, and equipment cost significantly improves.
In view of this, the Base-band Processing System being applicable to multisystem and the method that propose a kind of low cost is necessary.
Summary of the invention
In order to solve above technical matters, the invention provides following technical scheme:
A kind of satellite navigation system baseband signal processing system, comprises hyperchannel pretreatment module, multi-channel data cache module, code generation/external interface module, catches passage, tracking channel and control module;
Described control module, it is for storing hyperchannel pretreatment module, multi-channel data cache module, code generation/external interface module, catching the configuration parameter of passage and tracking channel, also for adjusting the corresponding configuration parameter of each module according to catching the signal that passage and tracking channel obtain;
Described hyperchannel pretreatment module, it carries out pre-service according to the configuration parameter in control module to input signal for receiving input signal, and the input signal after process is passed to multi-channel data cache module;
Described multi-channel data cache module, it is for forming according to the configuration parameter in control module the data buffer area that capacity is single or multiple data, and by according to corresponding capacity by process after input signal stored in data buffer area, different buffer areas can be deposited the data of identical frequency or deposit the data of different frequent points;
Described code generation/external interface module, it catches passage and tracking channel for generating pseudo-random code according to the configuration parameter in control module and be supplied to;
Describedly catch passage, it, for forming the logical channel of multiple equivalence according to the configuration parameter in control module, utilizes different pseudo-random codes, catches the signal in multi-channel data buffer area, and the signal captured is passed to control module;
Described tracking channel, it, for forming the logical channel of multiple equivalence according to the configuration parameter in control module, utilizes different pseudo-random codes, follows the tracks of the signal in multi-channel data buffer area, and the signal captured is passed to control module.
The invention has the beneficial effects as follows: the configuration parameter to each module adjusts according to real time data and situation by control module in the present invention, flexibly and reasonably configure hardware resource, with as far as possible little hardware resource, reach optimum results of property.Zhi Yong mono-road of the present invention hardware logic, just can realize the intermediate-freuqncy signal simultaneously receiving multichannel different system different frequent points; Zhi Yongji road realizes the equivalent logic passage on tens tunnels, just can follow the tracks of the satellite of different system different frequent points simultaneously; Only realize millions of equivalent correlator quantity by a hundreds of physics correlator quantity, improve acquiring satellite speed; By the flexible configuration of software, realize the switching between different system different frequent points, reach the hardware logic of time-sharing multiplex fixed amount, the satellite signal acquisition realizing multisystem multifrequency point is followed the tracks of.
On the basis of technique scheme, the present invention can also do following improvement.
Further, described hyperchannel pretreatment module can receive the input signal of single channel or multichannel, supports the input of arrowband and broadband signal.
Further, described hyperchannel pretreatment module comprises format conversion unit, bit wide adjustment unit, down-sampled unit and filter unit;
Described format conversion unit, the format conversion of input signal, for according to the configuration parameter in control module, after confirming the object format of format conversion, is object format by it;
Described bit wide adjustment unit, the bit wide of input signal, for according to the configuration parameter in control module, after confirming the target bit wide of bit wide adjustment, is adjusted to target bit wide by it;
Described down-sampled unit, it, for according to the configuration parameter in control module, after confirming down-sampled target frequency, carries out down-sampled process to input signal process;
Described filter unit, it, for according to the configuration parameter in control module, after confirming the parameter of wave filter, carries out filtering process to input signal.
Further, described code generation/external interface module comprises Three models, is respectively local and generates pseudo-random code pattern, the pseudo-random code that prestores pattern and by the real-time input pseudo-random code pattern of external interface.
Further, described hyperchannel pretreatment module, multi-channel data cache module, trapping module, tracking module and code generation/external interface module all have independently register configuration district in the control module, be used for storing the configuration parameter of modules, before each module is run, from corresponding register, read the configuration parameter that current block runs.
The beneficial effect of above-mentioned further scheme is adopted to be: the present invention can support single channel and the input of multichannel, arrowband and wide band radio-frequency simultaneously, the parameter of several common pattern has been preset in the register of control module, common pattern is met if judge, each module directly can read correlation parameter configuration in register, and efficiency is higher.
Utilize above-mentioned satellite navigation system baseband signal processing system to carry out a method for satellite navigation system base band signal process, comprise the following steps:
(1) described control module stores hyperchannel pretreatment module, multi-channel data cache module, code generations/external interface module, catches the configuration parameter of passage and tracking channel, and adjusts the corresponding configuration parameter of each module according to the signal of catching passage and tracking channel acquisition;
(2) described hyperchannel pretreatment module receives input signal, carries out pre-service according to the configuration parameter in control module to input signal, and the input signal after process is passed to multi-channel data cache module;
(3) described multi-channel data cache module forms according to the configuration parameter in control module the data buffer area that capacity is single or multiple data, and by according to corresponding capacity by process after input signal stored in data buffer area, different buffer areas can be deposited the data of identical frequency or deposit the data of different frequent points;
(4) described code generation/external interface module generates pseudo-random code according to the configuration parameter in control module and is supplied to and catches passage and tracking channel;
(5) catch passage described according to the configuration parameter in control module, form the logical channel of multiple equivalence, utilize different pseudo-random codes, the signal in multi-channel data buffer area is caught, and the signal captured is passed to control module;
(6) described tracking channel is according to the configuration parameter in control module, forms the logical channel of multiple equivalence, utilizes different pseudo-random codes, follows the tracks of, and the signal captured is passed to control module to the signal in multi-channel data buffer area.
Further, the hyperchannel pretreatment module in described step (2) can receive the input signal of single channel or multichannel, supports the input of arrowband and broadband signal.
Further, described method of carrying out satellite navigation system base band signal process, it is characterized in that, the hyperchannel pretreatment module in described step (3) processes input signal, specifically comprises and carries out format conversion, bit wide adjustment, down-sampled and filtering to input signal;
Described format conversion refers to according to the parameter configuration in control module, after confirming the object format of format conversion, is object format by the format conversion of input signal;
Described bit wide adjustment refers to according to the configuration parameter in control module, after confirming the target bit wide of bit wide adjustment, the bit wide of input signal is adjusted to target bit wide;
Describedly down-sampledly to refer to according to the configuration parameter in control module, after confirming down-sampled target frequency, down-sampled process is carried out to input signal process;
Described filtering refers to according to the configuration parameter in control module, after confirming the parameter of wave filter, carries out filtering process to input signal.
Further, code generation/external interface module in described step (4) comprises Three models, be respectively local and generate pseudo-random code pattern, the pseudo-random code that prestores pattern and by the real-time input pseudo-random code pattern of external interface, described code generation/external interface module is according to the configuration of control module, refer to the configuration according to control module, perform any one in Three models.
Further, in described step (5) and step (6) catch passage and tracking channel forms the logical channel of multiple equivalence according to the configuration parameter in control module, be specially, the physical channel of catching in passage and tracking channel forms multiple parallel logical channel according to time-multiplexed mode, and the quantity forming logical channel determines according to the configuration parameter in control module.
Further, described hyperchannel pretreatment module, multi-channel data cache module, trapping module, tracking module and code generation module, all there is independently register configuration district in control module, before each module is run, from corresponding register, read the configuration parameter that current block runs.
Further, the common pattern of configuration parameter has been preset in described each module register, control module judges whether according to the signal received the common pattern meeting each module, if meet common pattern, the control module configuration parameter arranged in register is the configuration parameter of common pattern, if do not meet common pattern, control module according to after analyzing signal, then carries out optimum configurations to register.
Accompanying drawing explanation
Fig. 1 is present system schematic diagram;
Embodiment
Be described principle of the present invention and feature below in conjunction with accompanying drawing, example, only for explaining the present invention, is not intended to limit scope of the present invention.
As shown in Figure 1, a kind of satellite navigation system baseband signal processing system, comprises hyperchannel pretreatment module, multi-channel data cache module, catches passage, tracking channel and control module;
Described hyperchannel pretreatment module can be configured flexibly by control module, receive the input of the input signal of single channel or multichannel, according to control module to the configuration parameter carried out after the differentiation of scene mode, realize different data format conversion, the adjustment of bit wide, down-sampled and filtering, and the signal after process is passed to multi-channel data cache module;
The data layout of input signal, supports the form of SIGN/MAG and two's complement, after system control module configuration object format, can unify to be converted to the inner object format used;
The adjustment of bit wide, the bit wide of input supports the data of 2-8bits, can be set by control module, or hardware logic is according to the common pattern preset in the control module preset, strong and weak and the scene judgement according to unlike signal, not affecting under the loss of signal loss of signal in other words target within the specific limits, adjusting bit wide, reaching and representing different signal conditions by suitable bit wide.
Down-sampled part, the very wide frequency range of signal support from a few MHz to tens MHz of input, in order to save the logic requirement of power consumption and subsequent treatment, here can be configured by control module, or hardware logic is according to the common pattern preset in control module, according to different system different frequent points, the demand of different subsequent treatment, selects suitable target frequency.
Filtering part, in hardware design, just devises the filter configuration on 16 rank, control module can according to cutoff frequency, bandwidth, and the index requests such as passband fluctuation carry out designing filter, obtain filter parameter, inform hardware logic by register configuration, reach the effect of filtering.
Hyperchannel pretreatment module also supports the input of arrowband and broadband rf signal simultaneously, can realize separation and the filtering of different frequent points, adopt time-multiplexed mode, with single pass hardware logic, reach the object of more high performance index or multidiameter delay.
Described multi-channel data cache module, it is for the configuration according to control module, form single or multiple data buffer area, and by the input signal after process stored in data buffer area, the data that different buffer areas can deposit identical frequency also can deposit the data of different frequent points.Because the data in data buffer area can be recycled, the buffer area of the different sizes configured by control module, follow-up process can be allowed to have more temporal tolerance and flexibility ratio, the follow-up requirement to processing power can be reduced to a certain extent, simultaneously in same processing power situation, equivalent can improve parallel treatment channel quantity.
Described code generation/external interface module, it catches passage and tracking channel for generating pseudo-random code and being supplied to; Different navigational system, different frequencies, the pseudo-random code that different satellites adopts is not identical, so in order to increase dirigibility and extensibility, in this module, devise Three models, be respectively local and generate pseudo-random code pattern, the pseudo-random code that prestores pattern and by the real-time input pseudo-random code pattern of external interface, code generation/external interface module according to the configuration of control module, can perform any one in Three models.
Described channel interior of catching has the equivalent correlator consisted of matched filter/FFT etc. in a large number, its inside is one group of parallel physical channel, the logical channel of multiple equivalence is realized by time-multiplexed mode, each logical channel, can catch the some satellites on a certain frequency according to the configuration of software, so different frequencies is caught to the signal of how many satellites, can the configuration of control module and the differentiation of pattern be passed through, adjust flexibly and arrange.
Described tracking channel inside is one group of parallel physical channel, the logical channel of multiple equivalence is realized by time-multiplexed mode, each logical channel, can follow the tracks of the some satellites on a certain frequency according to the configuration of software, so how many satellites are followed the tracks of for different frequencies, can the configuration of control module and the differentiation of pattern be passed through, adjust flexibly and arrange.
Described control module, it catches the signal in passage and tracking channel for basis, and the analysis to actual scene, obtain a series of mode decision, comprise system, frequency, signal intensity profile, satellite number situation and different application scenarios (static, dynamic etc.), determine the adjustment result of the final configuration parameter to modules.
Described hyperchannel pretreatment module, multi-channel data cache module, trapping module, tracking module and code generation module, all there is independently register configuration district in control module, before each module is run, all can read the configuration parameter of current operation from corresponding register.
Utilize above-mentioned satellite navigation system baseband signal processing system to carry out a method for satellite navigation system base band signal process, comprise the following steps:
(1) described control module stores hyperchannel pretreatment module, multi-channel data cache module, code generations/external interface module, catches the configuration parameter of passage and tracking channel, and adjusts the corresponding configuration parameter of each module according to the signal of catching passage and tracking channel acquisition;
(2) described hyperchannel pretreatment module receives input signal, carries out pre-service according to the configuration parameter in control module to input signal, and the input signal after process is passed to multi-channel data cache module;
(3) described multi-channel data cache module forms according to the configuration parameter in control module the data buffer area that capacity is single or multiple data, and by according to corresponding capacity by process after input signal stored in data buffer area, different buffer areas can be deposited the data of identical frequency or deposit the data of different frequent points;
(4) described code generation/external interface module generates pseudo-random code according to the configuration parameter in control module and is supplied to and catches passage and tracking channel;
(5) catch passage described according to the configuration parameter in control module, form the logical channel of multiple equivalence, utilize different pseudo-random codes, the signal in multi-channel data buffer area is caught, and the signal captured is passed to control module;
(6) described tracking channel is according to the configuration parameter in control module, forms the logical channel of multiple equivalence, utilizes different pseudo-random codes, follows the tracks of, and the signal captured is passed to control module to the signal in multi-channel data buffer area.
Hyperchannel pretreatment module in described step (2) can receive the input signal of single channel or multichannel, supports the input of arrowband and broadband signal.
Hyperchannel pretreatment module in described step (3) processes input signal, specifically comprises and carries out format conversion, bit wide adjustment, down-sampled and filtering to input signal;
Described format conversion refers to according to the parameter configuration in control module, after confirming the object format of format conversion, is object format by the format conversion of input signal;
Described bit wide adjustment refers to according to the configuration parameter in control module, after confirming the target bit wide of bit wide adjustment, the bit wide of input signal is adjusted to target bit wide;
Describedly down-sampledly to refer to according to the configuration parameter in control module, after confirming down-sampled target frequency, down-sampled process is carried out to input signal process;
Described filtering refers to according to the configuration parameter in control module, after confirming the parameter of wave filter, carries out filtering process to input signal.
Code generation/external interface module in described step (4) comprises Three models, be respectively local and generate pseudo-random code pattern, the pseudo-random code that prestores pattern and by the real-time input pseudo-random code pattern of external interface, described code generation/external interface module is according to the configuration of control module, refer to the configuration according to control module, perform any one in Three models.
In described step (5) and step (6) catch passage and tracking channel forms the logical channel of multiple equivalence according to the configuration parameter in control module, be specially, the physical channel of catching in passage and tracking channel forms multiple parallel logical channel according to time-multiplexed mode, the quantity forming logical channel determines according to the configuration parameter in control module, and each logical channel can be caught certain signal in certain buffer area of multi-channel data buffer area and follow the tracks of.
Described hyperchannel pretreatment module, multi-channel data cache module, trapping module, tracking module and code generation module, independently register configuration district is all had in control module, before each module is run, from corresponding register, read the configuration parameter that current block runs.
The default configuration parameters that each module is run is stored in each module register, during system initial startup, each module is run according to the default configuration parameters in register, in system operation, difference the adjusting in real time configuration parameter of control module environmentally state, each module changes running status by reading register synchronization.
The common pattern of configuration parameter has been preset in described each module register, control module judges whether according to the signal received the common pattern meeting each module, if meet common pattern, the control module configuration parameter arranged in register is the configuration parameter of common pattern, if do not meet common pattern, control module according to after analyzing signal, then carries out optimum configurations to register.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. a satellite navigation system baseband signal processing system, is characterized in that, comprises hyperchannel pretreatment module, multi-channel data cache module, code generation/external interface module, catches passage, tracking channel and control module;
Described control module, it is for storing hyperchannel pretreatment module, multi-channel data cache module, code generation/external interface module, catching the configuration parameter of passage and tracking channel, also for adjusting the corresponding configuration parameter of each module according to catching the signal that passage and tracking channel obtain;
Described hyperchannel pretreatment module, it carries out pre-service according to the configuration parameter in control module to input signal for receiving input signal, and the input signal after process is passed to multi-channel data cache module;
Described multi-channel data cache module, it is for forming according to the configuration parameter in control module the data buffer area that capacity is single or multiple data, and by according to corresponding capacity by process after input signal stored in data buffer area, different buffer areas can be deposited the data of identical frequency or deposit the data of different frequent points;
Described code generation/external interface module, it catches passage and tracking channel for generating pseudo-random code according to the configuration parameter in control module and be supplied to;
Describedly catch passage, it, for forming the logical channel of multiple equivalence according to the configuration parameter in control module, utilizes different pseudo-random codes, catches the signal in multi-channel data buffer area, and the signal captured is passed to control module;
Described tracking channel, it, for forming the logical channel of multiple equivalence according to the configuration parameter in control module, utilizes different pseudo-random codes, follows the tracks of the signal in multi-channel data buffer area, and the signal captured is passed to control module.
2. satellite navigation system baseband signal processing system according to claim 1, it is characterized in that, described hyperchannel pretreatment module can receive the input signal of single channel or multichannel, supports the input of arrowband and broadband signal.
3. satellite navigation system baseband signal processing system according to claim 2, it is characterized in that, described hyperchannel pretreatment module comprises format conversion unit, bit wide adjustment unit, down-sampled unit and filter unit;
Described format conversion unit, the format conversion of input signal, for according to the configuration parameter in control module, after confirming the object format of format conversion, is object format by it;
Described bit wide adjustment unit, the bit wide of input signal, for according to the configuration parameter in control module, after confirming the target bit wide of bit wide adjustment, is adjusted to target bit wide by it;
Described down-sampled unit, it, for according to the configuration parameter in control module, after confirming down-sampled target frequency, carries out down-sampled process to input signal process;
Described filter unit, it, for according to the configuration parameter in control module, after confirming the parameter of wave filter, carries out filtering process to input signal.
4. satellite navigation system baseband signal processing system according to claim 3, it is characterized in that, described code generation/external interface module comprises Three models, is respectively local and generates pseudo-random code pattern, the pseudo-random code that prestores pattern and by the real-time input pseudo-random code pattern of external interface.
5. satellite navigation system baseband signal processing system according to claim 1, it is characterized in that, described hyperchannel pretreatment module, multi-channel data cache module, trapping module, tracking module and code generation/external interface module all have independently register configuration district in the control module, be used for storing the configuration parameter of modules, before each module is run, from corresponding register, read the configuration parameter that current block runs.
6. utilize satellite navigation system baseband signal processing system as claimed in claim 1 to carry out a method for satellite navigation system base band signal process, it is characterized in that, comprise the following steps:
(1) described control module stores hyperchannel pretreatment module, multi-channel data cache module, code generations/external interface module, catches the configuration parameter of passage and tracking channel, and adjusts the corresponding configuration parameter of each module according to the signal of catching passage and tracking channel acquisition;
(2) described hyperchannel pretreatment module receives input signal, carries out pre-service according to the configuration parameter in control module to input signal, and the input signal after process is passed to multi-channel data cache module;
(3) described multi-channel data cache module forms according to the configuration parameter in control module the data buffer area that capacity is single or multiple data, and by according to corresponding capacity by process after input signal stored in data buffer area, different buffer areas can be deposited the data of identical frequency or deposit the data of different frequent points;
(4) described code generation/external interface module generates pseudo-random code according to the configuration parameter in control module and is supplied to and catches passage and tracking channel;
(5) catch passage described according to the configuration parameter in control module, form the logical channel of multiple equivalence, utilize different pseudo-random codes, the signal in multi-channel data buffer area is caught, and the signal captured is passed to control module;
(6) described tracking channel is according to the configuration parameter in control module, forms the logical channel of multiple equivalence, utilizes different pseudo-random codes, follows the tracks of, and the signal captured is passed to control module to the signal in multi-channel data buffer area.
7. carry out the method for satellite navigation system base band signal process according to claim 6, it is characterized in that, the hyperchannel pretreatment module in described step (2) can receive the input signal of single channel or multichannel, supports the input of arrowband and broadband signal.
8. carry out the method for satellite navigation system base band signal process according to claim 6, it is characterized in that, hyperchannel pretreatment module in described step (3) processes input signal, specifically comprises and carries out format conversion, bit wide adjustment, down-sampled and filtering to input signal;
Described format conversion refers to according to the parameter configuration in control module, after confirming the object format of format conversion, is object format by the format conversion of input signal;
Described bit wide adjustment refers to according to the configuration parameter in control module, after confirming the target bit wide of bit wide adjustment, the bit wide of input signal is adjusted to target bit wide;
Describedly down-sampledly to refer to according to the configuration parameter in control module, after confirming down-sampled target frequency, down-sampled process is carried out to input signal process;
Described filtering refers to according to the configuration parameter in control module, after confirming the parameter of wave filter, carries out filtering process to input signal.
9. carry out the method for satellite navigation system base band signal process according to claim 6, it is characterized in that, code generation/external interface module in described step (4) comprises Three models, be respectively local and generate pseudo-random code pattern, the pseudo-random code that prestores pattern and by the real-time input pseudo-random code pattern of external interface, described code generation/external interface module is according to the configuration of control module, refer to the configuration according to control module, perform any one in Three models.
10. carry out the method for satellite navigation system base band signal process according to claim 6, it is characterized in that, in described step (5) and step (6) catch passage and tracking channel forms the logical channel of multiple equivalence according to the configuration parameter in control module, be specially, the physical channel of catching in passage and tracking channel forms multiple parallel logical channel according to time-multiplexed mode, and the quantity forming logical channel determines according to the configuration parameter in control module.
11. methods of carrying out satellite navigation system base band signal process according to claim 6, it is characterized in that, described hyperchannel pretreatment module, multi-channel data cache module, trapping module, tracking module and code generation module, independently register configuration district is all had in control module, before each module is run, from corresponding register, read the configuration parameter that current block runs.
12. according to the method for carrying out satellite navigation system base band signal process described in claim 11, it is characterized in that, the common pattern of configuration parameter has been preset in described each module register, control module judges whether according to the signal received the common pattern meeting each module, if meet common pattern, the control module configuration parameter arranged in register is the configuration parameter of common pattern, if do not meet common pattern, control module according to after analyzing signal, then carries out optimum configurations to register.
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