CN105242282A - Satellite signal display system and method - Google Patents
Satellite signal display system and method Download PDFInfo
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- CN105242282A CN105242282A CN201510557375.2A CN201510557375A CN105242282A CN 105242282 A CN105242282 A CN 105242282A CN 201510557375 A CN201510557375 A CN 201510557375A CN 105242282 A CN105242282 A CN 105242282A
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- satellite
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- navigation
- big dipper
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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
Abstract
The invention discloses a satellite signal display system and method. The satellite signal display system comprises a Beidou-GPS dual-mode antenna and a vehicle-mounted Beidou-GPS dual-mode navigation device. The vehicle-mounted Beidou-GPS dual-mode navigation device comprises a CPU, a Beidou-GPS dual-mode navigation and positioning module and a display screen. The Beidou-GPS dual-mode navigation and positioning module is connected with the Beidou-GPS dual-mode antenna. The Beidou-GPS dual-mode antenna is used for receiving satellite signals and transmitting the satellite signals to the Beidou-GPS dual-mode navigation and positioning module. The Beidou-GPS dual-mode navigation and positioning module transmits the received satellite signals to the CPU. The CPU acquires all the satellite signals and processes and screens all the satellite signals and then outputs the satellite signals to a display screen. The navigation the positioning state, the date and time, the received number of satellites, the current number of available satellites, satellite IDs and signal intensity corresponding to all the satellites and other information can be acquired via satellite signal display frames.
Description
Technical field
The invention belongs to vehicle mounted guidance technology, be specifically related to a kind of satellite-signal display system and method.
Background technology
At present, most widely used on navigator fix market is guider based on GPS single mode, and because the operation of gps satellite is highly low, in the area such as high building, mountain area, satellite-signal is easily blocked, and the precision of impact navigation, even cannot normally use.With the operation of Beidou satellite navigation system, there is the vehicle mounted guidance product of some Big Dipper compatible with GPS in the market.Some products cannot check current satellite-signal, even if when navigation can not normally run, can not be confirmed whether it is the problem that navigation signal reception reason causes; Some products can check the satellite-signal received, but adopt the mode of signal mixed display, Problems existing, the satellite of first display is various, effectively can not distinguish what receive is gps satellite or big-dipper satellite, allows user experience superiority less than GPS-Big Dipper dual-mode navigation system; It two is that the satellite signal data of display is less, such as only the quantity of display satellite and signal intensity, far can not meet user and the developer demand for satellite signal information; Its three be display some nonessential information, for example speed, because the velocity information in velocity information and vehicular meter is not come from an information source, and the velocity information deviation that satellite system provides is greater than the error of car load actual travel hourly velocity sensor, therefore the velocity information of display and the speed of car load there are differences, doubt can be brought to user, even complain.
Summary of the invention
The object of this invention is to provide a kind of satellite-signal display system and method, export navigator fix state by satellite-signal display frame, satellite ID that current date and time, the number of satellite received, current usable satellite quantity, each channel are using and signal strength information corresponding to each satellite.
Satellite-signal display system of the present invention, comprise the Big Dipper-GPS dual-mode antenna and the vehicle-mounted Big Dipper-GPS dual-mode guider, the described vehicle-mounted Big Dipper-GPS dual-mode guider comprises CPU, and the Big Dipper be connected with CPU respectively-GPS dual-mode navigation positioning module, display screen, audio-frequency module, touch-screen and navigation keys, the described Big Dipper-GPS dual-mode navigation positioning module is connected with the Big Dipper-GPS dual-mode antenna;
The described Big Dipper-GPS dual-mode antenna is for the satellite-signal of the satellite-signal and gps satellite navigational system that receive Beidou satellite navigation system, and each satellite-signal received is transferred to the UART interface of the Big Dipper-GPS dual-mode navigation positioning module by coaxial cable, the mode that received satellite-signal is changed respectively by AD signal is converted to UART signal by the Big Dipper-GPS dual-mode navigation positioning module, and by the UART pin interface of UART Serial Port Transmission to CPU, CPU gathers each satellite-signal by the mode of UART rs 232 serial interface signal, after the effective satellite-signal received when the Big Dipper-GPS dual-mode navigation positioning module reaches preset value, then thinking that navigation is for positioning states, CPU processes each satellite-signal and screens, obtain the satellite information of current date and time and gps satellite navigational system and Beidou satellite navigation system, this satellite information comprises number of satellite and distributed intelligence, satellite ID, and satellite-signal strength information, and with BT656 video signal format by navigator fix state, current date and time and described satellite information output to display screen, GNSS information frame is exported by display screen, wherein, the satellite information in gps satellite navigational system is separated with the satellite information of Beidou satellite navigation system show, after the effective satellite-signal received when the Big Dipper-GPS dual-mode navigation positioning module does not reach preset value, then think that navigation is for no-fix state, in GNSS information frame, show navigator positioning states is no-fix.
When the Big Dipper-GPS dual-mode navigation positioning module receives more than four or four effective satellite-signals, then represent that navigation is for positioning states, shows " location " printed words in the left upper of GNSS information frame; Otherwise, then think that navigation is for no-fix state, shows " no-fix " printed words in the left upper of GNSS information frame.
A kind of satellite-signal display packing of the present invention, adopts satellite-signal display system of the present invention, comprises the following steps:
The each satellite-signal received for the satellite-signal of the satellite-signal and gps satellite navigational system that receive Beidou satellite navigation system, and is transferred to the UART interface of the Big Dipper-GPS dual-mode navigation positioning module by step 1, the described Big Dipper-GPS dual-mode antenna by coaxial cable;
Step 2, the mode that received satellite-signal is changed respectively by AD signal is converted to UART signal by the Big Dipper-GPS dual-mode navigation positioning module, and by the UART pin interface of UART Serial Port Transmission to CPU, CPU gathers each satellite-signal by the mode of UART rs 232 serial interface signal, after the effective satellite-signal received when the Big Dipper-GPS dual-mode navigation positioning module reaches preset value, then thinking that navigation is for positioning states, CPU processes each satellite-signal and screens, obtain the satellite information of current date and time and gps satellite navigational system and Beidou satellite navigation system, this satellite information comprises number of satellite and distributed intelligence, satellite ID, and satellite-signal strength information, and with BT656 video signal format by navigator fix state, current date and time and described satellite information output to display screen, GNSS information frame is exported by display screen, wherein, the satellite information in gps satellite navigational system is separated with the satellite information of Beidou satellite navigation system show, after the effective satellite-signal received when the Big Dipper-GPS dual-mode navigation positioning module does not reach preset value, then think that navigation is for no-fix state, in GNSS information frame, show navigator positioning states is no-fix.
In described step 2, when the Big Dipper-GPS dual-mode navigation positioning module receives more than four or four effective satellite-signals, then represent that navigation is for positioning states, shows " location " printed words in the left upper of GNSS information frame; Otherwise, then think that navigation is for no-fix state, shows " no-fix " printed words in the left upper of GNSS information frame.
In described step 2, the satellite information of described gps satellite navigational system shows in the left area of GNSS information frame, and the satellite information of described Beidou satellite navigation system shows in the right area of GNSS information frame.
When the vehicle-mounted Big Dipper-GPS dual-mode guider is in open state, user presses the navigation keys on the vehicle-mounted Big Dipper-GPS dual-mode guider face-piece, the signal that navigation keys is pressed is transferred to the I2C pin interface of CPU in the mode of I2C bus signals, after CPU receives signal, navigation mode of operation is entered into by the software program Interface Controller vehicle-mounted Big Dipper-GPS dual-mode guider, now, user presses satellite-signal icon corresponding on display screen on the touch-screen of the vehicle-mounted Big Dipper-GPS dual-mode guider, touch-screen is transferred to the I2C pin interface of CPU in the mode of I2C signal, after CPU receives the I2C signal of touch-screen, GNSS information frame is entered into by the software program Interface Controller vehicle-mounted Big Dipper-GPS dual-mode guider, user can check navigator fix state at this GNSS information frame, the satellite-signal of the Big Dipper and GPS, the information such as date and time.
The present invention has the following advantages: by this satellite-signal display system, user can pass through satellite-signal display frame, obtain navigator fix state, satellite PRN that current date and time, the number of satellite received, current usable satellite quantity, each channel are using numbers the information such as (i.e. satellite ID) and signal intensity corresponding to each satellite, for the use of navigation positioning system provides reference, the signal fault analyzing navigational system for developer provides foundation.The state of gps satellite signal and Big Dipper satellite signal can independently, clearly show by it.The basis being equivalent to the satellite-signal display information in GPS single mode navigational system adds the display of Big Dipper satellite signal, and non-essential display information is fallen in screening, optimization more clear than the mixed display mode of the Big Dipper-GPS dual-mode navigation.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the satellite-signal display frame figure in the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, satellite-signal display system of the present invention, comprise the Big Dipper-GPS dual-mode antenna 2 and the vehicle-mounted Big Dipper-GPS dual-mode guider 1, the vehicle-mounted Big Dipper-GPS dual-mode guider 1 comprises CPU4, and the Big Dipper be connected with CPU4 respectively-GPS dual-mode navigation positioning module 3, display screen 8, touch-screen 6, audio-frequency module 7 and navigation keys 5, the Big Dipper-GPS dual-mode navigation positioning module 3 is connected with the Big Dipper-GPS dual-mode antenna 2.
The each satellite-signal received for the satellite-signal of the satellite-signal and gps satellite navigational system that receive Beidou satellite navigation system, and is transferred to the UART interface of the Big Dipper-GPS dual-mode navigation positioning module 33 by the described Big Dipper-GPS dual-mode antenna 2 by coaxial cable.The mode that received satellite-signal is changed respectively by AD signal is converted to UART signal by the Big Dipper-GPS dual-mode navigation positioning module 3, and by the UART pin interface of UART Serial Port Transmission to CPU4, CPU4 gathers each satellite-signal by the mode of UART rs 232 serial interface signal, after the effective satellite-signal received when the Big Dipper-GPS dual-mode navigation positioning module 3 reaches preset value, then thinking that navigation is for positioning states, CPU4 processes each satellite-signal and screens, obtain the satellite information of current date and time and gps satellite navigational system and Beidou satellite navigation system, this satellite information comprises number of satellite and distributed intelligence, satellite ID, and satellite-signal strength information, and with BT656 video signal format by navigator fix state, current date and time and described satellite information output to display screen 8, GNSS information frame is exported by display screen 8, wherein, the satellite information in gps satellite navigational system is separated with the satellite information of Beidou satellite navigation system show, after the effective satellite-signal received when the Big Dipper-GPS dual-mode navigation positioning module 3 does not reach preset value, then think that navigation is for no-fix state, in GNSS information frame, show navigator positioning states is no-fix.
When the Big Dipper-GPS dual-mode navigation positioning module 3 receives more than four or four effective satellite-signals, then represent that navigation is for positioning states, shows " location " printed words in the left upper of GNSS information frame; Otherwise, then think that navigation is for no-fix state, shows " no-fix " printed words in the left upper of GNSS information frame.
A kind of satellite-signal display packing of the present invention, adopts satellite-signal display system of the present invention, comprises the following steps:
The each satellite-signal received for the satellite-signal of the satellite-signal and gps satellite navigational system that receive Beidou satellite navigation system, and is transferred to the UART interface of the Big Dipper-GPS dual-mode navigation positioning module 3 by step 1, the described Big Dipper-GPS dual-mode antenna 2 by coaxial cable.
Step 2, the mode that received satellite-signal is changed respectively by AD signal is converted to UART signal by the Big Dipper-GPS dual-mode navigation positioning module 3, and by the UART pin interface of UART Serial Port Transmission to CPU4, CPU4 gathers each satellite-signal by the mode of UART rs 232 serial interface signal, after the effective satellite-signal received when the Big Dipper-GPS dual-mode navigation positioning module 3 reaches preset value, then thinking that navigation is for positioning states, CPU4 processes each satellite-signal and screens, obtain the satellite information of current date and time and gps satellite navigational system and Beidou satellite navigation system, this satellite information comprises number of satellite and distributed intelligence, satellite ID, and satellite-signal strength information, and with BT656 video signal format by navigator fix state, current date and time and described satellite information output to display screen 8, GNSS information frame is exported by display screen 8, wherein, the satellite information in gps satellite navigational system is separated with the satellite information of Beidou satellite navigation system show, after the effective satellite-signal received when the Big Dipper-GPS dual-mode navigation positioning module 3 does not reach preset value, then think that navigation is for no-fix state, in GNSS information frame, show navigator positioning states is no-fix.
In described step 2, when the Big Dipper-GPS dual-mode navigation positioning module 3 receives more than four or four effective satellite-signals, then represent that navigation is for positioning states, shows " location " printed words in the left upper of GNSS information frame; Otherwise, then think that navigation is for no-fix state, shows " no-fix " printed words in the left upper of GNSS information frame.
In described step 2, the satellite information of described gps satellite navigational system shows in the left area of GNSS information frame, and the satellite information of described Beidou satellite navigation system shows in the right area of GNSS information frame.
When the vehicle-mounted Big Dipper-GPS dual-mode guider 1 is in open state, user presses the navigation keys 5 on the vehicle-mounted Big Dipper-GPS dual-mode guider 1 face-piece, the signal that navigation keys 5 is pressed is transferred to the I2C pin interface of CPU4 in the mode of I2C bus signals, after CPU4 receives signal, navigation mode of operation is entered into by the software program Interface Controller vehicle-mounted Big Dipper-GPS dual-mode guider 1, now, user presses satellite-signal icon corresponding on display screen 8 on the touch-screen 6 of the vehicle-mounted Big Dipper-GPS dual-mode guider 1, touch-screen 6 is transferred to the I2C pin interface of CPU4 in the mode of I2C signal, after CPU4 receives the I2C signal of touch-screen 6, GNSS information frame is entered into by the software program Interface Controller vehicle-mounted Big Dipper-GPS dual-mode guider 1, user can check navigator fix state at this GNSS information frame, the satellite-signal of the Big Dipper and GPS, the information such as current date and time.
As shown in Figure 2, satellite-signal display frame figure:
1, navigator fix state
Navigator fix state 9 shows at the upper left position of GNSS information frame, after the vehicle-mounted Big Dipper-GPS dual-mode guider 1 receives more than four or four effective satellite-signals, to the satellite-signal of the Big Dipper-GPS carry out multisystem merge resolve and the satellite choosing preferred configuration to obtain the PVT information of the vehicle-mounted Big Dipper-GPS dual-mode guider 1, output oplimal Location result and witness marker give built-in navigational system software, now navigational system software is judged to be " locating " state, and shows in GNSS display frame; Do not reach above condition, navigator fix state is shown as " no-fix " state.
While navigation is located first, CPU4 in the vehicle-mounted Big Dipper-GPS dual-mode guider 1 produces the sound signal in I2S bus by ALSA audio driver control audio-frequency module 7, this sound signal is converted into the prompt tone " navigation is located " representing the vehicle-mounted Big Dipper-GPS dual-mode guider 1 and locate by audio-frequency module 7 by audio frequency power amplifier, locate with this prompt tone prompting user vehicle-mounted Big Dipper-GPS dual-mode guider 1, the navigation information accurate and effective of after this display screen 8 display, the vehicle-mounted Big Dipper-GPS dual-mode guider 1 can based on navigation position information accurately for user provides navigation Service.
2, satellite-signal
Number of satellite in gps satellite navigational system and distributed intelligence Figure 10 show in the left area of GNSS display frame, and the number of satellite in Beidou satellite navigation system and distributed intelligence Figure 17 show in the right area of GNSS display frame.The national flag symbol that number of satellite and distributed intelligence figure have satellite belonging country corresponding below, the wherein corresponding national flag of United States 11 of gps system, the corresponding the Chinese flag 16 of dipper system.
Satellite-signal strength information 13 and satellite ID14 show at the bottom position of GNSS display frame, gps system can show at most the signal intensity of 12 satellites, dipper system can show at most signal intensity (the satellite-signal intensity that only display intensity is forward of 10 satellites, the part exceeded is given up, be not presented in picture), following rule is followed in the display of satellite signal data:
A, the satellite (i.e. effective satellite) used represent with green point on satellite-signal distribution plan, and the red point of untapped satellite (i.e. invalid satellite) represents.
The numeral on B, satellite-signal intensity histograms top, represents that the satellite PRN that each channel is using numbers (i.e. satellite ID);
Numeral in C, satellite-signal intensity histograms column, represents the signal intensity of each satellite;
D, the satellite used can show ID and the signal intensity of satellite, visible but untapped satellite (i.e. invalid satellite), only show the ID of this satellite, do not show the signal intensity of this satellite.
3, date and the time:
Date 12 and time 15 is upper/lower positions display in GNSS signal display frame, and be positioned at immediately below number of satellite and distributed intelligence figure, wherein the date 12 is presented at left position, and the time 15 is presented at location right.
Claims (5)
1. a satellite-signal display system, comprise the Big Dipper-GPS dual-mode antenna (2) and the vehicle-mounted Big Dipper-GPS dual-mode guider (1), the described vehicle-mounted Big Dipper-GPS dual-mode guider (1) comprises CPU(4), and respectively with CPU(4) Big Dipper-GPS dual-mode navigation positioning module (3), display screen (8), audio-frequency module (7), touch-screen (6) and the navigation keys (5) that are connected, the described Big Dipper-GPS dual-mode navigation positioning module (3) is connected with the Big Dipper-GPS dual-mode antenna (2); It is characterized in that:
The described Big Dipper-GPS dual-mode antenna (2) is for the satellite-signal of the satellite-signal and gps satellite navigational system that receive Beidou satellite navigation system, and each satellite-signal received is transferred to the UART interface of the Big Dipper-GPS dual-mode navigation positioning module (3) by coaxial cable, the mode that received satellite-signal is changed respectively by AD signal is converted to UART signal by the Big Dipper-GPS dual-mode navigation positioning module (3), and by UART Serial Port Transmission to CPU(4) UART pin interface, CPU(4) each satellite-signal is gathered by the mode of UART rs 232 serial interface signal, after effective satellite-signal that the Big Dipper-GPS dual-mode navigation positioning module (3) receives reaches preset value, then thinking that navigation is for positioning states, CPU(4) each satellite-signal is processed and screened, obtain the satellite information of current date and time and gps satellite navigational system and Beidou satellite navigation system, this satellite information comprises number of satellite and distributed intelligence, satellite ID, and satellite-signal strength information, and with BT656 video signal format by navigator fix state, current date and time and described satellite information output to display screen (8), GNSS information frame is exported by display screen (8), wherein, the satellite information in gps satellite navigational system is separated with the satellite information of Beidou satellite navigation system show, after effective satellite-signal that the Big Dipper-GPS dual-mode navigation positioning module (3) receives does not reach preset value, then think that navigation is for no-fix state, in GNSS information frame, show navigator positioning states is no-fix.
2. satellite-signal display system according to claim 1, it is characterized in that: when the Big Dipper-GPS dual-mode navigation positioning module (3) receives more than four or four effective satellite-signals, then represent that navigation is for positioning states, shows " location " printed words in the left upper of GNSS information frame; Otherwise, then think that navigation is for no-fix state, shows " no-fix " printed words in the left upper of GNSS information frame.
3. a satellite-signal display packing, is characterized in that: adopt satellite-signal display system as claimed in claim 1 or 2, comprise the following steps:
The each satellite-signal received for the satellite-signal of the satellite-signal and gps satellite navigational system that receive Beidou satellite navigation system, and is transferred to the UART interface of the Big Dipper-GPS dual-mode navigation positioning module (3) 3 by step 1, the described Big Dipper-GPS dual-mode antenna 2 by coaxial cable;
Step 2, the mode that received satellite-signal is changed respectively by AD signal is converted to UART signal by the Big Dipper-GPS dual-mode navigation positioning module (3), and by UART Serial Port Transmission to CPU(4) UART pin interface, CPU(4) each satellite-signal is gathered by the mode of UART rs 232 serial interface signal, after effective satellite-signal that the Big Dipper-GPS dual-mode navigation positioning module (3) receives reaches preset value, then thinking that navigation is for positioning states, CPU(4) each satellite-signal is processed and screened, obtain the satellite information of current date and time and gps satellite navigational system and Beidou satellite navigation system, this satellite information comprises number of satellite and distributed intelligence, satellite ID, and satellite-signal strength information, and with BT656 video signal format by navigator fix state, current date and time and described satellite information output to display screen (8), GNSS information frame is exported by display screen (8), wherein, the satellite information in gps satellite navigational system is separated with the satellite information of Beidou satellite navigation system show, after effective satellite-signal that the Big Dipper-GPS dual-mode navigation positioning module (3) receives does not reach preset value, then think that navigation is for no-fix state, in GNSS information frame, show navigator positioning states is no-fix.
4. satellite-signal display packing according to claim 3, it is characterized in that: in described step 2, when the Big Dipper-GPS dual-mode navigation positioning module (3) receives more than four or four effective satellite-signals, then represent that navigation is for positioning states, shows " location " printed words in the left upper of GNSS information frame; Otherwise, then think that navigation is for no-fix state, shows " no-fix " printed words in the left upper of GNSS information frame.
5. the satellite-signal display packing according to claim 3 or 4, it is characterized in that: in described step 2, the satellite information of described gps satellite navigational system shows in the left area of GNSS information frame, and the satellite information of described Beidou satellite navigation system shows in the right area of GNSS information frame.
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| CN111999528B (en) * | 2020-08-31 | 2022-03-29 | 南宁光波科技有限公司 | Speed calibrator based on Beidou BDS high-precision positioning and speed calibration method |
| CN113280827A (en) * | 2021-05-14 | 2021-08-20 | 北京福田戴姆勒汽车有限公司 | Vehicle positioning navigation system, vehicle and vehicle positioning navigation method |
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