CN102445700A - System and method for correcting global positioning system (GPS) height data of national marine electronics association (NMEA) information - Google Patents
System and method for correcting global positioning system (GPS) height data of national marine electronics association (NMEA) information Download PDFInfo
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- CN102445700A CN102445700A CN2010105077887A CN201010507788A CN102445700A CN 102445700 A CN102445700 A CN 102445700A CN 2010105077887 A CN2010105077887 A CN 2010105077887A CN 201010507788 A CN201010507788 A CN 201010507788A CN 102445700 A CN102445700 A CN 102445700A
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Abstract
The invention discloses a system and method for correcting global positioning system (GPS) height data of national marine electronics association (NMEA) information. The system is based on a navigation/positioning device, and comprises a signal receiving module, a barometer and a processing module. The method comprises the following steps: receiving a GPS signal by the signal receiving module to generate initial NMEA information; the initial NMEA information comprises the GPS height data; the barometer is used for measuring ambient pressure and obtaining corrected height data; and the processing module is used for replacing the GPS height data in the initial NMEA information by the corrected height data, thereby, corrected NMEA information is formed. By utilizing the system and method for correcting the GPS height data of the NMEA information, as the more accurate corrected height data obtained by the barometer is adopted to replace the GPS height data with lower accuracy to form the corrected NMEA information with higher accuracy for positioning navigation, the positioning navigation is more accurate.
Description
[technical field]
The present invention provides a kind of GPS altitude information of NMEA information, refers to a kind of GPS altitude information update the system and method for NMEA information especially.
[background technology]
Development along with location and airmanship; Various location and navigational system have been widely used in the daily life; With GPS (Global Position System) GPS is example; Develop into present individual location navigation by initial vehicle mounted positioning navigation, the appearance of gps system and development are for daily life brings great convenience.
NMEA is " National Marine Electronics Association " (international ocean Institution of Electronics) abbreviation, also is data transmission standard TIA simultaneously,, in fact should be NMEA 0183 here.It is the standard information of a cover definition receiver output, and several kinds of different forms are arranged, and every kind all is independent relevant ASCII fromat, and comma separates data stream, and data stream length does not wait from the 30-100 character; Usually select output at interval with per second, the most frequently used form is " GGA ", and it has comprised positioning time, latitude; Longitude highly, is located used satellite number, the DOP value; Differential state with proofread and correct the period etc., other speed arranged, follow the tracks of the date etc.
Yet, the present NMEA information that GPS navigation/locating device received, GPS altitude information does not wherein have the horizontal data that kind accurate.The precision of common general this altitude information out of doors is about 30 meters.Yet for some situation, this is enough inaccurate.For example; Use automatic navigator to navigate, when motor-driven vehicle going on overline bridge or overline bridge following time, and in general the height of overline bridge all less than 30m; In this case; Because the precision of the GPS altitude information of the NMEA information that automatic navigator received is limited, therefore can occur judging that motor vehicle goes on the overline bridge or under the overline bridge, bring difficulty for the navigation of motor vehicle; In addition; Use outdoor navigating instrument to navigate, owing to complex environment causes poor signal, the GPS altitude information also can be correspondingly poorer; This can cause inaccurate hiking guidance path, and particularly the reason owing to signal difference and multipath effect shows more obviously in the mountain valley.
In view of this, be necessary to provide a kind of GPS altitude information update the system and method for NMEA information in fact, to address the above problem.
[summary of the invention]
The object of the present invention is to provide a kind of GPS altitude information update the system and method for NMEA information, the inaccurate problem that causes navigating thereby solution GPS altitude information degree of accuracy is not high.
For reaching above-mentioned purpose, the GPS altitude information update the system of NMEA information provided by the invention, this system is based on a navigation/locating device, and this system comprises:
One signal receiving module, in order to receive a gps signal to produce an initial NMEA information, this initial NMEA information comprises the GPS altitude information;
One barometer draws corrected altitude data in order to measurement environment air pressure and according to this ambient pressure;
One processing module, it is connected with above-mentioned signal receiving module and above-mentioned barometer, in order to the GPS altitude information in the above-mentioned initial NMEA information is substituted by these corrected altitude data, thereby forms the NMEA information of revising.
Preferably, above-mentioned navigation/locating device also comprises a path planning module, and this path planning module is planned navigation according to the NMEA information of above-mentioned correction;
Preferably, above-mentioned navigation/locating device also comprises a location output module, and this location output module is exported positioning result according to the NMEA information of above-mentioned correction.
For reaching above-mentioned purpose, the GPS altitude information modification method of NMEA information provided by the invention, and this method is based on said system, and this method comprises:
This signal receiving module receives a gps signal and produces an initial NMEA information, and this initial NMEA information comprises the GPS altitude information;
This barometric surveying ambient pressure also draws corrected altitude data;
This processing module is substituted the GPS altitude information in the above-mentioned initial NMEA information by these corrected altitude data, thereby forms the NMEA information of revising.
Preferably, this method also comprises step: this path planning module is planned navigation according to the NMEA information of above-mentioned correction;
Preferably, this method also comprises step: this location output module is exported positioning result according to the NMEA information of above-mentioned correction.
Compared to prior art; Utilize the GPS altitude information update the system and the method for NMEA information of the present invention; Because the more accurate corrected altitude data that adopt barometer to obtain substitute the not high enough GPS altitude information of degree of accuracy; The NMEA information that forms the higher correction of degree of accuracy is in order to location navigation, thereby makes location navigation more accurate.
For the object of the invention, structural attitude and function thereof are had further understanding, conjunction with figs. specifies as follows now:
[description of drawings]
Fig. 1 illustrates the square frame module map into GPS altitude information update the system one preferred embodiment of NMEA information of the present invention.
Fig. 2 illustrates the method flow diagram into GPS altitude information modification method one preferred embodiment of NMEA information of the present invention.
Fig. 3 illustrates the method flow diagram into another preferred embodiment of GPS altitude information modification method of NMEA information of the present invention.
[embodiment]
See also Fig. 1, Fig. 1 illustrates the square frame module map into GPS altitude information update the system one preferred embodiment of NMEA information of the present invention.
For reaching above-mentioned purpose, the GPS altitude information update the system of NMEA information provided by the invention, this system is based on a navigation/locating device 10, and this system comprises:
One signal receiving module 1, in order to receive a gps signal to produce an initial NMEA information, this initial NMEA information comprises the GPS altitude information;
One barometer 2 draws corrected altitude data in order to measurement environment air pressure and according to this ambient pressure;
One processing module 3, it is connected with above-mentioned signal receiving module and above-mentioned barometer, in order to the GPS altitude information in the above-mentioned initial NMEA information is substituted by these corrected altitude data, thereby forms the NMEA information of revising.
In present embodiment, above-mentioned navigation/locating device 10 also comprises a path planning module 4, and this path planning module 4 is planned navigation according to the NMEA information of above-mentioned correction.
In present embodiment, above-mentioned navigation/locating device 10 also comprises a location output module 5, and this location output module 5 is exported positioning result according to the NMEA information of above-mentioned correction.
Can be specially automatic navigator for above-mentioned navigation/locating device 10, this moment, this path planning module 4 was carried out the planning of traffic route according to the NMEA information of above-mentioned correction; Can be specially outdoor navigating instrument for above-mentioned navigation/locating device 10, this moment, this path planning module 4 was carried out the planning of route on foot according to the NMEA information of above-mentioned correction.
Please consult Fig. 2 again, Fig. 2 illustrates the method flow diagram into GPS altitude information modification method one preferred embodiment of NMEA information of the present invention.
For reaching above-mentioned purpose, the GPS altitude information modification method of NMEA information provided by the invention, this method is based on said system, and this method comprises:
This signal receiving module receives a gps signal and produces an initial NMEA information, and this initial NMEA information comprises GPS altitude information (step 100);
This barometric surveying ambient pressure also draws corrected altitude data (step 101);
This processing module is substituted the GPS altitude information in the above-mentioned initial NMEA information by these corrected altitude data, thereby forms the NMEA information of revising (step 102).
In present embodiment, above-mentioned navigation/locating device comprises path planning module, and this method also comprises step after step 102: this path planning module is planned navigation (step 103) according to the NMEA information of above-mentioned correction.
Can be specially automatic navigator for above-mentioned navigation/locating device, this moment, step 103 was specially this path planning module is carried out traffic route according to the NMEA information of above-mentioned correction planning; Can be specially outdoor navigating instrument for above-mentioned navigation/locating device, step 103 was specially this path planning module and carried out the planning of route on foot according to the NMEA information of above-mentioned correction this moment.
Please consult Fig. 3 again, Fig. 3 illustrates the method flow diagram into another preferred embodiment of GPS altitude information modification method of NMEA information of the present invention.
In present embodiment, above-mentioned navigation/locating device comprises the location output module, and this method also comprises step after step 102: this location output module is exported (step 104) according to the NMEA information of above-mentioned correction with positioning result.
See also following table; Following table is that (the actual height above sea level in this building is 4m to the data that when certain building of test, draw of navigation/locating device 10 of utilizing GPS altitude information update the system of the present invention and method; And the building floor height is 5m, and current average gas pressure is 1025.80hPa):
It is thus clear that: utilize the relative height that measures behind this GPS altitude information update the system more accurate, error is in 5m, and the about 10m of absolute altitude error had been superior to the previous precision (about 30 meters) that directly adopts the altitude information that NMEA information obtains.And under height-precision of the present invention, use automatic navigator to navigate, and can judge that motor vehicle goes on the overline bridge or under the overline bridge, bring convenience for the navigation of motor vehicle; In addition, use outdoor navigating instrument to navigate, the guidance path of going on a hike more accurately can be provided.
Compared to prior art; Utilize the GPS altitude information update the system and the method for NMEA information of the present invention; Because the more accurate corrected altitude data that adopt barometer 2 to obtain substitute the not high enough GPS altitude information of degree of accuracy; The NMEA information that forms the higher correction of degree of accuracy is in order to location navigation, thereby makes location navigation more accurate.
Claims (8)
1. the GPS altitude information update the system of a NMEA information, this system is characterized in that based on a navigation/locating device this system comprises:
One signal receiving module, in order to receive a gps signal to produce an initial NMEA information, this initial NMEA information comprises the GPS altitude information;
One barometer draws corrected altitude data in order to measurement environment air pressure and according to this ambient pressure;
One processing module, it is connected with above-mentioned signal receiving module and above-mentioned barometer, in order to the GPS altitude information in the above-mentioned initial NMEA information is substituted by these corrected altitude data, thereby forms the NMEA information of revising.
2. the GPS altitude information update the system of NMEA information as claimed in claim 1 is characterized in that above-mentioned navigation/locating device also comprises a path planning module, and this path planning module is planned navigation according to the NMEA information of above-mentioned correction.
3. the GPS altitude information update the system of NMEA information as claimed in claim 2 is characterized in that above-mentioned navigation/locating device is an automatic navigator, and this path planning module is carried out the planning of traffic route according to the NMEA information of above-mentioned correction.
4. the GPS altitude information update the system of NMEA information as claimed in claim 2 is characterized in that above-mentioned navigation/locating device is outdoor navigating instrument, and this path planning module is carried out the planning of route on foot according to the NMEA information of above-mentioned correction.
5. the GPS altitude information modification method of a NMEA information, and this method is characterized in that based on said system the method comprising the steps of:
This signal receiving module receives a gps signal and produces an initial NMEA information, and this initial NMEA information comprises the GPS altitude information;
This barometric surveying ambient pressure also draws corrected altitude data;
This processing module is substituted the GPS altitude information in the above-mentioned initial NMEA information by these corrected altitude data, thereby forms the NMEA information of revising.
6. the GPS altitude information modification method of NMEA information as claimed in claim 5; It is characterized in that; Above-mentioned navigation/locating device comprises path planning module; For above-mentioned steps: this processing module is substituted the GPS altitude information in the above-mentioned initial NMEA information by these corrected altitude data, thereby forms the NMEA information of revising; After it, also comprise step: this path planning module is planned navigation according to the NMEA information of above-mentioned correction.
7. the GPS altitude information modification method of NMEA information as claimed in claim 6 is characterized in that above-mentioned navigation/locating device is an automatic navigator, at this moment step: this path planning module is planned navigation according to the NMEA information of above-mentioned correction; Be specially this path planning module and carry out the planning of traffic route according to the NMEA information of above-mentioned correction.
8. the GPS altitude information modification method of NMEA information as claimed in claim 6 is characterized in that above-mentioned navigation/locating device is outdoor navigating instrument, at this moment step: this path planning module is planned navigation according to the NMEA information of above-mentioned correction; Be specially this path planning module and carry out the planning of route on foot according to the NMEA information of above-mentioned correction.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103116168A (en) * | 2013-02-01 | 2013-05-22 | 珠海德百祺科技有限公司 | Anomaly detecting and processing method and device for navigational positioning devices |
| CN105807304A (en) * | 2015-03-11 | 2016-07-27 | 孙欣 | Electric bike electric quantity control method based on cloud service |
| CN105966355A (en) * | 2015-03-11 | 2016-09-28 | 孙欣 | Network-based electrocar control system and method thereof |
| CN106840181A (en) * | 2016-12-09 | 2017-06-13 | 斑马信息科技有限公司 | System and method for determining vehicle location |
| CN107367745A (en) * | 2016-05-12 | 2017-11-21 | 通用汽车环球科技运作有限责任公司 | It is related to the GLONASS vehicle location of overlapping road |
| JPWO2018038236A1 (en) * | 2016-08-26 | 2019-07-11 | 京セラ株式会社 | Electronic device, control program and operation method of electronic device |
| CN113484879A (en) * | 2021-06-02 | 2021-10-08 | 歌尔股份有限公司 | Positioning method and device of wearable equipment |
| CN113624258A (en) * | 2021-08-12 | 2021-11-09 | 武汉齐物科技有限公司 | Riding height calibration method and device |
| CN114440830A (en) * | 2022-02-25 | 2022-05-06 | 广东高驰运动科技股份有限公司 | Height measuring method, device, equipment and storage medium |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103116168A (en) * | 2013-02-01 | 2013-05-22 | 珠海德百祺科技有限公司 | Anomaly detecting and processing method and device for navigational positioning devices |
| CN105966354B (en) * | 2015-03-11 | 2017-12-19 | 江山达人科技服务有限公司 | A kind of network electric car safe and intelligent control method |
| CN105966355A (en) * | 2015-03-11 | 2016-09-28 | 孙欣 | Network-based electrocar control system and method thereof |
| CN105966354A (en) * | 2015-03-11 | 2016-09-28 | 孙欣 | Network-based electrocar safety intelligent control system and method thereof |
| CN105807304A (en) * | 2015-03-11 | 2016-07-27 | 孙欣 | Electric bike electric quantity control method based on cloud service |
| CN105966355B (en) * | 2015-03-11 | 2018-02-06 | 南京理工大学 | A kind of network electrombile control method |
| CN105807304B (en) * | 2015-03-11 | 2018-10-02 | 朱洋 | Electric vehicle electric quantity controlling method based on cloud service |
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| JPWO2018038236A1 (en) * | 2016-08-26 | 2019-07-11 | 京セラ株式会社 | Electronic device, control program and operation method of electronic device |
| CN106840181A (en) * | 2016-12-09 | 2017-06-13 | 斑马信息科技有限公司 | System and method for determining vehicle location |
| CN113484879A (en) * | 2021-06-02 | 2021-10-08 | 歌尔股份有限公司 | Positioning method and device of wearable equipment |
| CN113484879B (en) * | 2021-06-02 | 2023-12-01 | 歌尔股份有限公司 | Positioning method and device of wearable device |
| CN113624258A (en) * | 2021-08-12 | 2021-11-09 | 武汉齐物科技有限公司 | Riding height calibration method and device |
| CN114440830A (en) * | 2022-02-25 | 2022-05-06 | 广东高驰运动科技股份有限公司 | Height measuring method, device, equipment and storage medium |
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Application publication date: 20120509 |