CN102854518A - System and method for automatically testing positioning time of GPS (global positioning system) receiver - Google Patents
System and method for automatically testing positioning time of GPS (global positioning system) receiver Download PDFInfo
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- CN102854518A CN102854518A CN2011101829494A CN201110182949A CN102854518A CN 102854518 A CN102854518 A CN 102854518A CN 2011101829494 A CN2011101829494 A CN 2011101829494A CN 201110182949 A CN201110182949 A CN 201110182949A CN 102854518 A CN102854518 A CN 102854518A
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Abstract
The invention discloses a system for automatically testing positioning time of a GPS (global positioning system) receiver. The system comprises a GPS signal simulator, a GPS test fixture, a GPS test shield box and a controller. The GPS signal simulator is used for simulating and outputting GPS signals and providing the same to the GPS receiver. The GPS test frequency shield box is used for shielding interfering signals. The controller is used for setting GPS positioning test; judging whether the GPS receiver is positioned successfully or not, if yes, recording the positioning time, if not, displaying the failure information to users; and judging whether all tests are finished or not. The GPS signal simulator is connected with the GPS received to be tested via the GPS test fixture, the GPS signal simulator and the GPS receiver are respectively connected with the controller, and the GPS receiver is arranged in the GPS test shield box. The invention further discloses a method for automatically testing the positioning time of the GPS (global positioning system) receiver. By the aid of the system and the method, the problem that experimenters need to repeat the test for multiple times is solved, and labor force and testing time are saved.
Description
Technical field
The present invention relates to a kind of Auto-Test System and method positioning time of GPS receiver, particularly relate to a kind of Auto-Test System and method positioning time that can switch the GPS scene and can simulate the GPS receiver of multiple practical applications occasion.
Background technology
In increasingly flourishing wireless communication field, the widespread use of GPS (GPS), just changing and affecting people's life and custom, the GPS product category is various, GPS can be quick, efficiently, provide exactly a little, line, the accurate three-dimensional coordinate of face key element and other relevant informations, have round-the-clock, high precision, robotization, the distinguishing features such as high benefit are widely used in military affairs, civilian traffic (boats and ships, aircraft, automobile etc.) navigation, geodetic surveying, photogrammetric, field exploration is investigated, land use survey, accurate agricultural and daily life (personnel tracking, amusement and recreation) different field such as.
Nowadays increasing producer has joined the activities such as GPS research and development, production, for very important impetus has been played in development and the application of GPS industry.The industry of competition is also more and more higher for the requirement of GPS receiver performance day by day, and the cycle for research and development, production also requires more and more urgent simultaneously.The allegro life of user requires also to improve gradually for the primary positioning time (Time to First Fix) of GPS, the sort of GPS receiver positioning time long even situation about can not locate for a long time, present user is difficult to accept.Thereby in the research and development of whole GPS product, production run, accuracy and test duration length, also pay attention to day by day that research and development and manufacturing enterprise test for primary positioning time.
Because gps navigation message is with 50 bps speed emission, bit duration is 20ms, and receiving whole group of text needs 12.5 minutes.Basic satellite ephemeris and timing parameter repeated once in per 30 seconds.So should be noted that the time interval of test when carrying out the test of GPS primary positioning time.
Yet the development company of a lot of GPS chips in the whole world, GPS module, GPS receiving terminal is different for the primary positioning time method of testing of GPS product, and test interval is also different, and is larger thereby the accuracy of test result also differs.Most research and development units method of testing on the primary positioning time of GPS is normally manually initiated instruction by the tester, allow the cold start-up of GPS receiver, startup temperature and warm start, the test of short time, be difficult to embody the actual performance of the GPS receiver of research and development, then more test data is collected in test for a long time, and the meeting of input of tester and repeated test time increases more.Yet carrying out cold start-up, startup temperature and warm start, artificial initiation control GPS on the time interval, also is difficult to hold, more complicated, and going wrong is difficult to analyze.Carry out cold start-up, startup temperature and warm start although present some company adopts fixed interval to control GPS, the same shortage of this method of testing is pressed close to the true operating position of GPS.
Be badly in need of thus a kind of test macro and method positioning time of efficient GPS product, to reflect objectively the station-keeping ability of GPS product.
Summary of the invention
The technical problem to be solved in the present invention be for the development company that overcomes GPS chip in the prior art, GPS module, GPS receiving terminal different for the primary positioning time method of testing of GPS product, test interval is also different, that thereby the accuracy of test result also differs is large, the test result defective of the actual performance of reactor product objectively, provide a kind of can the simulating GPS receiver in actual use various situations and the Auto-Test System and method positioning time of the test result GPS receiver of pressing close to GPS receiver actual performance most.
The present invention solves above-mentioned technical matters by following technical proposals:
A kind of Auto-Test System positioning time of GPS receiver, its characteristics be, it comprises:
One gps signal simulator is used for the adjustable gps signal of simulation output intensity, and the gps signal of simulation is offered a GPS receiver to be measured, and wherein the gps signal of this simulation is dynamic GPS signal and/or static GPS signal;
One GPS test fixture is used for providing working power and gps signal input interface and data-interface to GPS receiver to be measured;
Case is covered in one GPS test frequently, is used for frequently covering undesired signal;
One controller is used for carrying out the assignment test setting of GPS; Be used for also judging whether this GPS receiver to be measured location is successful, if, the positioning time of record GPS receiver; If not, the failed information in location is shown to the user; And judge whether to execute all tests,
Wherein this assignment test setting comprises:
The output intensity of the gps signal of gps signal simulator simulation is set;
The setting of switching time between the selection of dynamic GPS signal and/or static GPS signal and dynamic GPS signal and the static GPS signal;
The stepping time of test is set;
The first start-up time of test and start-up time again are set;
And the number of times of test;
Wherein, this gps signal simulator links to each other with this GPS receiver to be measured by this GPS test fixture, and this gps signal simulator is connected to respectively this controller with this GPS receiver to be measured, and this GPS receiver to be measured places this GPS test to cover case frequently.
For example, in the gps signal simulator, there are various scene signals can select that (as: aircraft is in the flight of certain spatial domain and record its movement locus, automobile and travel in certain country and record its movement locus, steamer in certain marine site or river navigation and record its running orbit etc., normative document is made with the track data of these motion recordings by the manufacturer of gps signal simulator, then the gps signal simulator can be with the data readback of recording under these environment out, and we are called the dynamic GPS environment.Same, the GPS receiver is in advance in the situation that static work of every country and area, record the data that a period of time GPS receiver receives, the data that gather when last instrument producer is also static with these are made normative document, leave in the gps signal simulator playback in out, we are called the static GPS environment.)
The PC end software of gps signal simulator can make a choice, and can mark out dynamic or static on the software.Simultaneously, select the dynamic scene file and play, can see aircraft, the automobile of simulation, the track of steamer motion.Static also is to see substantially actionless environment.
Preferably, Auto-Test System positioning time of this GPS receiver also comprises a gps signal attenuator, the gps signal that is used for the output of decay gps signal simulator, the input end of this gps signal attenuator links to each other with this gps signal simulator, and the output terminal of this gps signal attenuator links to each other with this GPS receiver to be measured by this GPS test fixture.
Preferably, assignment test comprises one or more in cold start-up test, startup temperature test and the warm start test.The user can select separately corresponding test, also can select simultaneously three kinds of tests alternately to carry out test.
Preferably, this assignment test setting also comprises: the time interval of cold start-up test, startup temperature test and warm start test arranges.
Preferably, represent time of starting first with c:b:a, then stepping time and start-up time first and the relation of start-up time is as follows again:
If this GPS receiver to be measured is in c:b:(a+g after starting first) on the location, (a+g)＜60 wherein, if (a+n)＜60, then be c:(b+1 start-up time again): (a+n); If (a+n) 〉=60, then again start-up time be c:(b+2): (a+n-60);
If this GPS receiver to be measured is in c:(b+z after starting first): on the y location, (a+g) 〉=60 wherein, if (a+n)＜y, then be c:(b+z+1 start-up time again): (a+n); If 60＞(a+n)＞y, then be c:(b+z start-up time again): (a+n); If (a+n) 〉=60, then again start-up time be c:(b+z+1): (a+n-60);
Wherein c represents hour, and b represents minute, and a represents second, and g represents the positioning time of GPS receiver to be measured, and z represents (a+g) divided by 60 integer, and y represents (a+g) divided by 60 remainder, and n represents the stepping time that arranges.
Preferably, this controller also is used for calculating maximal value, minimum value and the mean value of the positioning time of GPS receiver after finishing all tests.
Preferably, Auto-Test System positioning time of this GPS receiver also comprises a display device, is used for showing locating information to the user, and wherein locating information comprises:
The positioning time of GPS receiver; And/or,
The maximal value of the positioning time of GPS receiver, minimum value and mean value; And/or,
The GPS receiver receives the GPS information of exporting behind the gps signal, this GPS information comprises: one or more in the positioning states of GPS receiver, carrier-to-noise ratio, the satellite numbering that receives, PDOP value (Position DilutionofPrecision, positional precision degree of strength) and the enhancing satellite system information.
The present invention also provides a kind of automatic test approach positioning time of GPS receiver, and its characteristics are, may further comprise the steps:
S
1, a controller carries out the assignment test setting of GPS, wherein the setting of assignment test comprises:
The output intensity of the gps signal of one gps signal simulator simulation is set;
The selection of dynamic GPS signal and/or static GPS signal, and/or dynamic GPS signal and
The setting of switching time between the static GPS signal;
The stepping time of test is set;
The first start-up time of test and start-up time again are set;
And the number of times of test;
S
2, this controller controls this gps signal simulator according to step S
1In assignment test the output gps signal is set and in the first startup that begins this GPS receiver to be measured first start-up time that arranges, wherein represents first start-up time with c:b:a;
S
3, this controller judges whether this GPS receiver finishes the location, if enter step S
4If not, the failed information in location is shown to the user;
S
4, this controller judges that (a+g) whether less than 60, if (a+g)＜60, then enters step S
5If (a+g) 〉=60, then enter step S
6
S
5, first start after this GPS receiver in c:b:(a+g) on the location, then whether this controller judges (a+n) less than 60, if (a+n)＜60, then be c:(b+1 start-up time again): (a+n); If (a+n) 〉=60, then again start-up time be c:(b+2): (a+n-60);
S
6, first start after this GPS receiver to be measured in c:(b+z): on the y location, (a+g) 〉=60 wherein, if (a+n)＜y, then be c:(b+z+1 start-up time again): (a+n); If 60＞(a+n)＞y, then be c:(b+z start-up time again): (a+n); If (a+n) 〉=60, then again start-up time be c:(b+z+1): (a+n-60);
S
7, this controller is in the again startup that again begins this GPS receiver start-up time, and judges whether the complete all tests of executed, if enter step S
8If not, and this is updated to new first start-up time again start-up time, and returns step S
2
S
8, this controller record GPS receiver positioning time being shown to the user,
Wherein c represents hour, and b represents minute, and a represents second, and g represents the positioning time of GPS receiver to be measured, and z represents (a+g) divided by 60 integer, and y represents (a+g) divided by 60 remainder, and n represents the stepping time that arranges.
Preferably, the gps signal of this gps signal simulator output is input to this GPS receiver to be measured after gps signal attenuator decay.
Preferably, assignment test comprises one or more in cold start-up test, startup temperature test and the warm start test.
Preferably, step S
1In the assignment test setting also comprise: the time interval of the test of cold start-up test, startup temperature and warm start test arranges.
Preferably, step S
8In further comprising the steps of:
Calculate the GPS receiver positioning time maximal value, minimum value and mean value and the result is shown to the user, and/or,
Show locating information to the user, wherein locating information comprises:
The positioning time of GPS receiver; And/or,
The maximal value of the positioning time of GPS receiver, minimum value and mean value; And/or,
The GPS receiver receives the GPS information of exporting behind the gps signal, and this GPS information comprises: one or more in the positioning states of GPS receiver, carrier-to-noise ratio, the satellite numbering that receives, PDOP value and the enhancing satellite system information.
Positive progressive effect of the present invention is:
1, the present invention works out the method for testing of science mainly according to the custom of the actual use of various users, makes test result press close to GPS receiver actual performance values most.By the method at stepping time interval is set, application controls software arranges cold start-up, startup temperature, the warm start zero-time that GPS carries out, and with software control gps signal simulator synchronously output signal strength and the reception environment scene (as dynamic, static) of orderly change gps signal simulator, GPS primary positioning time test operation is carried out in the circulation of science, finally tests out more accurately the first positioning performance of the GPS receiver (GPS module or GPS terminal) of these research and development.
2, GPS receiver of the present invention positioning time Auto-Test System by the stepped intervals time is set, according to the cold start-up of last time execution GPS receiver, a second in a certain minute of startup temperature and warm start instruction, after the GPS receiver is successfully located, can be automatically first a second (a gets 0～59) in interval 30 seconds later a minute add on the second of stepping time, again carry out respectively cold start-up, startup temperature and warm start operation, the time that output is located first when again locating, carry out loop test according to predefined cycle index like this, finally according to the result, demonstrate maximum primary positioning time, minimum primary positioning time and average primary positioning time.
3, Auto-Test System positioning time of GPS receiver of the present invention has also added the intensity setting of gps signal simulator, and the selection setting of static GPS environment and dynamic GPS environment.This system can select separately static GPS environment or dynamic GPS environment and be equipped with the gps signal simulator to export corresponding gps signal intensity; Also can select simultaneously static GPS environment and dynamic GPS environment and be equipped with the gps signal simulator to export corresponding gps signal intensity, like this when carrying out the test of GPS primary positioning time, system can alternately provide the scene of GPS Static and dynamic automatically, GPS primary positioning time test gps signal and the single situation of environment have so just been solved in the past, fully the true use sight in the static and moving process of analog subscriber.
4, according to test macro of the present invention, the scientific and effective test that solves the repetitions repeatedly of experimenter's needs, the final problem that sometimes also may be difficult to judge the GPS receiver performance has been saved manpower and test duration; This system also tests applicable to plant produced simultaneously.
Description of drawings
Fig. 1 be GPS receiver of the present invention positioning time Auto-Test System structured flowchart.
Fig. 2 be GPS receiver of the present invention positioning time automatic test approach process flow diagram.
Embodiment
Provide preferred embodiment of the present invention below in conjunction with accompanying drawing, to describe technical scheme of the present invention in detail.
With reference to figure 1, introduce Auto-Test System positioning time of GPS receiver of the present invention, it comprises:
One gps signal simulator 1 is used for the adjustable gps signal of simulation output intensity, and the gps signal of simulation is offered a GPS receiver 6 to be measured, and wherein the gps signal of this simulation is dynamic GPS signal and/or static GPS signal;
One GPS test fixture 3 is used for providing working power and gps signal input interface and data-interface to GPS receiver 6 to be measured;
Case 4 is covered in one GPS test frequently, is used for frequently covering undesired signal;
One controller 5 is used for carrying out the assignment test setting of GPS; Be used for also judging whether these GPS receiver to be measured 6 location are successful, if, the record location time; If not, the failed information in location is shown to the user; And judge whether to execute all tests,
Wherein this assignment test setting comprises:
The output intensity of the gps signal of gps signal simulator 1 simulation is set;
The setting of switching time between the selection of dynamic GPS signal and/or static GPS signal and dynamic GPS signal and the static GPS signal;
The stepping time of test is set;
The first start-up time of test and start-up time again are set;
And the number of times of test;
Wherein, this gps signal simulator 1 links to each other with this GPS receiver 6 to be measured by this GPS test fixture 3, this gps signal simulator 1 is connected to respectively this controller 5 with this GPS receiver 6 to be measured, and this GPS receiver 6 to be measured places this GPS test to cover case 4 frequently.
Further, Auto-Test System positioning time of this GPS receiver also comprises a gps signal attenuator 2, the gps signal that is used for 1 output of decay gps signal simulator, the input end of this gps signal attenuator 2 links to each other with this gps signal simulator 1, and the output terminal of this gps signal attenuator 2 links to each other with this GPS receiver 6 to be measured by this GPS test fixture 3.
For instance, place this GPS test frequently to cover case 4 GPS receiver 6 and GPS test fixture 3, a signaling interface of GPS test fixture 3 is connected with gps signal simulator 1 with gps signal attenuator 2 through the SMA radio frequency interface by a radio frequency line; The FPDP of this GPS test fixture 3 is covered RS232 serial ports converting interface on the case 4 by the RS232 Serial Port Line frequently through GPS test and is transferred out and connect controller 5; Controller 5 can be by GPIB general purpose interface bus control gps signal simulator 1; Can adopt in addition a power supply adaptor to receive on the external power source through the power interface that GPS test frequency covers case, give GPS receiver 6 and 3 power supplies of GPS test fixture, make its normal operation.Above-described concrete connected mode only illustrates, and those skilled in the art can also adopt other existing means according to actual needs.
Specifically, assignment test comprises one or more in cold start-up test, startup temperature test and the warm start test.The user can select corresponding test according to actual needs, also can select simultaneously three kinds of tests alternately to carry out test.
When user selection behind the different test pattern (being the test of cold start-up test, startup temperature and warm start test), this assignment test setting also comprises: the time interval of cold start-up test, startup temperature test and warm start test arranges.Be that Auto-Test System positioning time of GPS receiver of the present invention can be carried out separately a certain test in cold start-up, startup temperature and the warm start, also can three all choose, carry out one by one successively loop test, the complete interval of for example cold start-up test loop is carried out respectively startup temperature test and warm start test again after 12.5 minutes.The time interval of concrete test can be arranged according to the application scenario of reality voluntarily by the user.
For the test of GPS positioning time of realizing repeating, represent time of starting first with c:b:a, then stepping time and start-up time first and the relation of start-up time is as follows again:
If this GPS receiver to be measured is in c:b:(a+g after starting first) on the location, (a+g)＜60 wherein, if (a+n)＜60, then be c:(b+1 start-up time again): (a+n); If (a+n) 〉=60, then again start-up time be c:(b+2): (a+n-60);
If this GPS receiver to be measured is in c:(b+z after starting first): on the y location, (a+g) 〉=60 wherein, if (a+n)＜y, then be c:(b+z+1 start-up time again): (a+n); If 60＞(a+n)＞y, then be c:(b+z start-up time again): (a+n); If (a+n) 〉=60, then again start-up time be c:(b+z+1): (a+n-60);
Wherein c represents hour, and b represents minute, and a represents second, and g represents the positioning time of GPS receiver to be measured, and z represents (a+g) divided by 60 integer, and y represents (a+g) divided by 60 remainder, and n represents the stepping time that arranges.
In addition, this controller 5 also is used for calculating maximal value, minimum value and the mean value of the positioning time of GPS receiver 6 after finishing all tests, and is shown to the user.
With reference to figure 2, automatic test approach positioning time of introducing GPS receiver of the present invention may further comprise the steps:
The output intensity of the gps signal of one gps signal simulator simulation is set;
The selection of dynamic GPS signal and/or static GPS signal, and/or the setting of switching time between dynamic GPS signal and the static GPS signal;
The stepping time of test is set;
The first start-up time of test and start-up time again are set;
And the number of times of test.
Specifically, before test positioning time of carrying out the GPS receiver, the output gps signal power of gps signal simulator is set first, and can be as required, select separately static scene (static GPS signal) or dynamic scene (dynamic GPS signal), if needing static scene and dynamic scene all tests, static scene and dynamic scene all can be selected so, the switching of the scene of two states meeting intermittent during test, if need to change static scene and the dynamic scene of test usefulness, testing tool software can be selected to arrange.
After opening and setting the GPS output signal, be set the first start-up time of cold start-up testing time, startup temperature testing time, warm start testing time and every kind of test of the primary positioning time that need to carry out.
Step 103 is shown to the user with the failed information in location, how to carry out follow-up operation by user selection.
Whether step 110, this controller judge (y+n) less than 60, if (a+n)＜y, then enter step 111; If (a+n) 〉=60, then enter step 112; If 60＞(a+n)＞y then enters 117.
Step 115 again is updated to new first start-up time start-up time with this, and returns step 101.
Wherein c represents hour, and b represents minute, and a represents second, and g represents the positioning time of GPS receiver to be measured, and z represents (a+g) divided by 60 integer, and y represents (a+g) divided by 60 remainder, and n represents the stepping time that arranges.
Specifically, the gps signal of this gps signal simulator output is input to this GPS receiver to be measured after gps signal attenuator decay.
More specifically, assignment test comprises one or more in cold start-up test, startup temperature test and the warm start test.The user can select separately a certain in three kinds of tests, also can select simultaneously multiple in three kinds of tests.
In addition, the assignment test setting in the step 100 also comprises: the time interval of cold start-up test, startup temperature test and warm start test arranges.
From user perspective, at first open the Auto-Test System and setting after the signal intensity of output gps signal of gps signal simulator positioning time of GPS receiver of the present invention, cold start-up number of times, startup temperature number of times, the warm start number of times of the primary positioning time that need to carry out is set; According to the progress of validation test and the needs of time, cold start-up stepping time, startup temperature stepping time, warm start stepping time are set respectively.When the cold start-up stepping time being set being 1 second, suppose that the GPS receiver has carried out cold start-up second at b minute a, then the time of execution next time cold start is b+1 minute a+1 second [situation (a+1)＜60], or b+2 minute a+1-60 second [situation (a+1) 〉=60], carried out cold start-up after second such as the GPS receiver at b minute a, on in b minute or b+1 minute, not locating, the running time of again carrying out cold start-up postponed by rule above-mentioned for the time after locating upward backward, thereby guarantee to carry out the start-up time of successively circulation between 0～59 second of cold start, until test finishes.Equally, startup temperature positioning time, the method for testing with warm start positioning time was identical with the method principle, just slightly had any different on the stand-by period of executable operations instruction.
In the positioning time of GPS receiver test process, the GPS receiver can also be received the GPS information of exporting behind the gps signal and be shown to the user, for example show GPS receiver positioning states, carrier-to-noise ratio, the satellite numbering, the PDOP value that receive and some information that strengthen satellite system, be used for judging test mode and the gps signal simulator gps signal output situation of Current GPS receiver.Come analysis-by-synthesis in conjunction with residue testing time information and primary positioning time result after tested again, as note abnormalities and be convenient to the tester and in time stop test, analyze, further saving may need time and the cost of repeated test.
Although more than described the specific embodiment of the present invention, it will be understood by those of skill in the art that these only illustrate, protection scope of the present invention is limited by appended claims.Those skilled in the art can make various changes or modifications to these embodiments under the prerequisite that does not deviate from principle of the present invention and essence, but these changes and modification all fall into protection scope of the present invention.
Claims (12)
1. Auto-Test System positioning time of a GPS receiver is characterized in that, it comprises:
One gps signal simulator is used for the adjustable gps signal of simulation output intensity, and the gps signal of simulation is offered a GPS receiver to be measured, and wherein the gps signal of this simulation is dynamic GPS signal and/or static GPS signal;
One GPS test fixture is used for providing working power and gps signal input interface and data-interface to GPS receiver to be measured;
Case is covered in one GPS test frequently, is used for frequently covering undesired signal;
One controller is used for carrying out the assignment test setting of GPS; Be used for also judging whether this GPS receiver to be measured location is successful, if, the positioning time of record GPS receiver; If not, the failed information in location is shown to the user; And judge whether to execute all tests,
Wherein this assignment test setting comprises:
The output intensity of the gps signal of gps signal simulator simulation is set;
The setting of switching time between the selection of dynamic GPS signal and/or static GPS signal and dynamic GPS signal and the static GPS signal;
The stepping time of test is set;
The first start-up time of test and start-up time again are set;
And the number of times of test;
Wherein, this gps signal simulator links to each other with this GPS receiver to be measured by this GPS test fixture, and this gps signal simulator is connected to respectively this controller with this GPS receiver to be measured, and this GPS receiver to be measured places this GPS test to cover case frequently.
2. Auto-Test System positioning time of GPS receiver as claimed in claim 1, it is characterized in that, Auto-Test System positioning time of this GPS receiver also comprises a gps signal attenuator, the gps signal that is used for the output of decay gps signal simulator, the input end of this gps signal attenuator links to each other with this gps signal simulator, and the output terminal of this gps signal attenuator links to each other with this GPS receiver to be measured by this GPS test fixture.
3. Auto-Test System positioning time of GPS receiver as claimed in claim 1 is characterized in that, assignment test comprises one or more in cold start-up test, startup temperature test and the warm start test.
4. Auto-Test System positioning time of GPS receiver as claimed in claim 3 is characterized in that, this assignment test setting also comprises: the time interval of cold start-up test, startup temperature test and warm start test arranges.
5. such as Auto-Test System positioning time of the described GPS receiver of any one among the claim 1-4, it is characterized in that, represent time of starting first with c:b:a, then stepping time and start-up time first and the relation of start-up time is as follows again:
If this GPS receiver to be measured is in c:b:(a+g after starting first) on the location, (a+g)＜60 wherein, if (a+n)＜60, then be c:(b+1 start-up time again): (a+n); If (a+n) 〉=60, then again start-up time be c:(b+2): (a+n-60);
If this GPS receiver to be measured is in c:(b+z after starting first): on the y location, (a+g) 〉=60 wherein, if (a+n)＜y, then be c:(b+z+1 start-up time again): (a+n); If 60＞(a+n)＞y, then be c:(b+z start-up time again): (a+n); If (a+n) 〉=60, then again start-up time be c:(b+z+1): (a+n-60);
Wherein c represents hour, and b represents minute, and a represents second, and g represents the positioning time of GPS receiver to be measured, and z represents (a+g) divided by 60 integer, and y represents (a+g) divided by 60 remainder, and n represents the stepping time that arranges.
6. Auto-Test System positioning time of GPS receiver as claimed in claim 5 is characterized in that, this controller also is used for calculating maximal value, minimum value and the mean value of the positioning time of GPS receiver after finishing all tests.
7. Auto-Test System positioning time of GPS receiver as claimed in claim 6 is characterized in that, Auto-Test System positioning time of this GPS receiver also comprises a display device, is used for showing locating information to the user, and wherein locating information comprises:
The positioning time of GPS receiver; And/or,
The maximal value of the positioning time of GPS receiver, minimum value and mean value; And/or,
The GPS receiver receives the GPS information of exporting behind the gps signal, and this GPS information comprises: one or more in the positioning states of GPS receiver, carrier-to-noise ratio, the satellite numbering that receives, PDOP value and the enhancing satellite system information.
8. automatic test approach positioning time of a GPS receiver is characterized in that, may further comprise the steps:
S
1, a controller carries out the assignment test setting of GPS, wherein the setting of assignment test comprises:
The output intensity of the gps signal of one gps signal simulator simulation is set;
The selection of dynamic GPS signal and/or static GPS signal, and/or dynamic GPS signal and
The setting of switching time between the static GPS signal;
The stepping time of test is set;
The first start-up time of test and start-up time again are set;
And the number of times of test;
S
2, this controller controls this gps signal simulator according to step S
1In assignment test the output gps signal is set and in the first startup that begins this GPS receiver to be measured first start-up time that arranges, wherein represents first start-up time with c:b:a;
S
3, this controller judges whether this GPS receiver finishes the location, if enter step S
4If not, the failed information in location is shown to the user;
S
4, this controller judges that (a+g) whether less than 60, if (a+g)＜60, then enters step S
5If (a+g) 〉=60, then enter step S
6
S
5, first start after this GPS receiver in c:b:(a+g) on the location, then whether this controller judges (a+n) less than 60, if (a+n)＜60, then be c:(b+1 start-up time again): (a+n); If (a+n) 〉=60, then again start-up time be c:(b+2): (a+n-60);
S
6If, first start after this GPS receiver to be measured in c:(b+z): on the y location, (a+g) 〉=60 wherein, if (a+n)＜y, then be c:(b+z+1 start-up time again): (a+n); If 60＞(a+n)＞y, then be c:(b+z start-up time again): (a+n); If (a+n) 〉=60, then again start-up time be c:(b+z+1): (a+n-60);
S
7, this controller is in the again startup that again begins this GPS receiver start-up time, and judges whether the complete all tests of executed, if enter step S
8If not, and this is updated to new first start-up time again start-up time, and returns step S
2
S
8, this controller record GPS receiver positioning time being shown to the user,
Wherein c represents hour, and b represents minute, and a represents second, and g represents the positioning time of GPS receiver to be measured, and z represents (a+g) divided by 60 integer, and y represents (a+g) divided by 60 remainder, and n represents the stepping time that arranges.
9. automatic test approach positioning time of GPS receiver as claimed in claim 8 is characterized in that, the gps signal of this gps signal simulator output is input to this GPS receiver to be measured after gps signal attenuator decay.
10. automatic test approach positioning time of GPS receiver as claimed in claim 8 is characterized in that, assignment test comprises one or more in cold start-up test, startup temperature test and the warm start test.
11. automatic test approach positioning time such as the described GPS receiver of any one among the claim 7-9 is characterized in that step S
1In the assignment test setting also comprise: the time interval of the test of cold start-up test, startup temperature and warm start test arranges.
12. automatic test approach positioning time of GPS receiver as claimed in claim 11 is characterized in that step S
8In further comprising the steps of:
Calculate the GPS receiver positioning time maximal value, minimum value and mean value and the result is shown to the user, and/or,
Show locating information to the user, wherein locating information comprises:
The positioning time of GPS receiver; And/or,
The maximal value of the positioning time of GPS receiver, minimum value and mean value; And/or,
The GPS receiver receives the GPS information of exporting behind the gps signal, and this GPS information comprises: one or more in the positioning states of GPS receiver, carrier-to-noise ratio, the satellite numbering that receives, PDOP value and the enhancing satellite system information.
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