CN103018760A - Tri-mode positioning and navigation system based on BD-1 (Beidou-1)/BD-2 (Beidou-2)/GPS (global position system) - Google Patents
Tri-mode positioning and navigation system based on BD-1 (Beidou-1)/BD-2 (Beidou-2)/GPS (global position system) Download PDFInfo
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- CN103018760A CN103018760A CN2012105152389A CN201210515238A CN103018760A CN 103018760 A CN103018760 A CN 103018760A CN 2012105152389 A CN2012105152389 A CN 2012105152389A CN 201210515238 A CN201210515238 A CN 201210515238A CN 103018760 A CN103018760 A CN 103018760A
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Abstract
The invention relates to a tri-mode positioning and navigation system based on BD-1 (Beidou-1)/BD-2 (Beidou-2)/GPS (global position system). The system comprises an outdoor unit, an indoor unit and cables, wherein the indoor unit is a human-computer interaction interface, and the outdoor unit comprises an antenna module, an integrated service management module, a shell and a mounting flange. The antenna module is arranged above the shell, the integrated service management module is arranged inside the shell, the mounting flange is disposed under the shell, and the four portions are combined mutually into a whole from top to bottom. When in work, the outdoor unit respectively receives signals of the BD-1/BD-2/GPS, simultaneously transmits the signals emitted from the BD-1, and completes the functions of radio frequency management, AD (analog-digital) conversion, baseband processing and positioning resolve, and then sends a result to the indoor unit to achieve a human-computer interaction.
Description
Technical field
The present invention relates to a kind of Position Fixing Navigation System, particularly a kind of Position Fixing Navigation System based on the Big Dipper one/Big Dipper two/GPS three-mode.
Background technology
GPS has fully shown its dominance in navigation, positioning field since it comes out, many fields are because revolutionary variation has occured in the appearance of GPS.
Although the gps satellite navigation positioning system of the U.S. can be covering the whole world, realize round-the-clock, round-the-clock navigation, all belong to the control of the external military, and GPS provides the positioning service of different accuracy to the different brackets user.In the military conflict area, the U.S. may consider for number one, close GPS in some areas.Therefore, required fund is huge and the cycle is very long although develop, and the global position system of China's develop actively oneself is led the U.S. to the control of navigator fix service to break away from.
In in October, 2000 and Dec, first and second transit satellite that China develops voluntarily---" Big Dipper Navigation Satellite " (abbreviation BeiDou-I satellite) succeeds in sending up lift-off in Xichang, two satellites have consisted of " Beidou satellite navigation system ", and this is the essential step of China in the autonomous satellite navigation field.This system at present at home fields such as military field, highway communication, transportation by railroad, offshore operation brought into play certain effect.But there is certain defective in Big Dipper generation navigation positioning system, and namely it adopts active locator meams, so that receiver user can not independently calculate the coordinate figure of oneself, and user capacity is limited, and bearing accuracy is not high, easily exposes ownership goal position etc.The Big Dipper two generations satellite navigation system of building at present adopts and the similar passive three-dimensional localization principle of gps system at navigation principle, and the effective range of satellite constellation is not global, but zonal; Can support the autonomous real-time three-dimensional location of subscriber computer in the certain limit centered by China.
Yet the various NAVSTAR that already emerged mostly are the navigation of single GPS or single Big Dipper one Pattern localization, and obviously, this all is difficult to the variety of problems of being avoided above-mentioned in some occasion, and two generations of the Big Dipper are building, also rare its product on the market.Therefore, how the Big Dipper one, the Big Dipper two and three kinds of patterns of GPS being concentrated on one and position navigation, is insider's important topic anxious to be resolved.
Summary of the invention
Purpose of the present invention is exactly all drawbacks and the restriction that overcomes gps satellite Position Fixing Navigation System and Big Dipper generation monotype Position Fixing Navigation System, satisfy the high-quality navigator fix demand that industry highlights day by day, provide a kind of reasonable in design, Position Fixing Navigation System based on the Big Dipper one/Big Dipper two/GPS three-mode simple in structure, as can to switch flexibly.
In order to achieve the above object, the technical scheme taked of the present invention is:
A kind of Position Fixing Navigation System based on the Big Dipper one/Big Dipper two/GPS three-mode is comprised of outdoor unit 1, indoor unit 2 and cable 3, and wherein: indoor unit 2 is human-computer interaction interface, outdoor unit 1 includes antenna module 1.1, Multiple Business Management module 1.2, housing 1.3, mounting flange 1.4.And antenna module 1.1 places housing 1.3 tops, Multiple Business Management module 1.2 places in the housing 1.3, and mounting flange 1.4 places housing 1.3 belows, and 4 mutually combine from top to bottom consists of an integral body, then connect to form whole system through cable 3 and indoor unit 2, wherein:
Described antenna module 1.1 is lightning-arrest cap structure, in succession being provided with from top to down receiving antenna 1.1.1 and radio frequency power amplification module 1.1.2 in it, is the radio frequency external interface of whole system, is used for receiving the Big Dipper one, the Big Dipper two and GPS collect mail number, and send the Big Dipper one and transmit.
Described Multiple Business Management module 1.2 is modular construction, include: ARM flush bonding processor 1.2.1, synchronous dynamic data-carrier store SDRAM1.2.2, erasable electronic memory FLASFH1.2.3, the special-purpose GPS/ Big Dipper two double mode baseband processing module 1.2.4, down-converted module 1.2.5, AD translation circuit module 1.2.6, Big Dipper generation module 1.2.7, RS232 serial interface module 1.2.8, radio frequency interface 1.2.9, data output interface 1.2.10, debugging input interface 1.2.11.This module is core component of the present invention, finishes radio frequency processing, AD conversion, and Base-Band Processing, the functions such as positioning calculation, and the result is sent to indoor unit 2.
Described housing 1.3 is circular cylindrical cavity formula structural member, its top port is provided with O-ring seal 1.3.1, and the left side is provided with data output 1.3.2, and the right side is provided with debugging interface 1.3.3, the bottom is provided with absorption magnet 1.3.4, is used for directly outdoor unit 1 being fixed in metal sheet.
Described mounting flange 1.4 is the supplemental component of housing 1.3, provides reliable fixed form for outdoor unit 1 in needing the occasion of high stability.
Working method of the present invention is:
After receiving Big Dipper binary signal, antenna module 1.1 by radio frequency interface 1.2.9.1 it is sent into Multiple Business Management module 1.2, through becoming corresponding intermediate-freuqncy signal behind the down-converted module 1.2.6, then be converted to digital signal behind AD conversion module 1.2.5, digital signal obtains positioning calculation required pseudorange information and textual information after resolving through baseband processing module 1.2.4.
After receiving gps signal, antenna module 1.1 by radio frequency interface 1.2.9.2 it is sent into Multiple Business Management module 1.2, through becoming corresponding intermediate-freuqncy signal behind the down-converted module 1.2.6, then be converted to digital signal behind AD conversion module 1.2.5, digital signal obtains positioning calculation required pseudorange information and textual information after resolving through baseband processing module 1.2.4.
Antenna module 1.1 receives sends into Big Dipper generation module 1.2.7 with it by radio frequency interface 1.2.9.3 after the Big Dippeves one are collected mail number, Big Dipper generation module location is required transmits and is sent to antenna module 1.1 by radio frequency interface 1.2.9.3 again and amplifies and emission, and Big Dipper generation module 1.2.7 complete independently Big Dipper generation positioning function is also sent the result into embedded system.
When the present invention works, but wipe storer 1.2.3 by ARM flush bonding processor 1.2.1, synchronous dynamic data-carrier store SDRAM1.2.2 and FLASH electronics and form embedded system, receive pseudorange and textual information that baseband processing module 1.2.4 sends, finish the data processing work such as positioning calculation, the result is directly sent into ARM flush bonding processor 1.2.1 in Big Dipper generation unit, and last ARM flush bonding processor 1.2.1 is sent to data output interface 1.2.10 after result need to being driven by RS232 serial interface module 1.2.8 by system.The testing radio frequency signal can enter the Multiple Business Management module by debugging input interface 1.2.11 and replace aerial signal, realizes system debug.
The present invention based on spread spectrum technic and satnav velocity measuring technique, supports multiple location navigation system on circuit, realized high receiving sensitivity, high position precision.Setting out according to actual operating position on the general structure, is outdoor unit and indoor unit with system divides, has both guaranteed the high sensitivity of receiving ability, has guaranteed that again man-machine interface is friendly, and reliability is high, and is easy to operate.
Description of drawings
Fig. 1 is system of the present invention connection diagram,
Fig. 2 is system of the present invention electricity theory diagram,
Fig. 3 is outdoor unit one-piece construction schematic diagram of the present invention,
Fig. 4 is outdoor unit Multiple Business Management module electrical schematic diagram of the present invention,
Fig. 5 is outdoor unit Multiple Business Management module printed circuit board layout of the present invention.
Symbol description among the figure:
1.1 be the antenna module,
1.1.1 be antenna,
1.1.2 be radio frequency power amplification module;
1.2 be the Multiple Business Management module,
1.2.1 be the ARM flush bonding processor,
1.2.2 be synchronous dynamic data-carrier store SDRAM,
But 1.2.3 wipe storer for the FLASH electronics,
1.2.4 be baseband processing module,
1.2.5 be the AD conversion module,
1.2.6 be the down-converted module,
1.2.7 be the Big Dipper one processing module,
1.2.8 be the RS232 serial interface module,
1.2.9 be radio frequency interface module,
1.2.9.1 be the Big Dipper two radio frequency interfaces,
1.2.9.2 be the GPS radio frequency interface,
1.2.9.3 be the Big Dipper one radio frequency interface,
1.2.10 be data output interface,
1.2.11 be the test input interface;
1.3 be housing,
1.3.1 be O-ring seal,
1.3.2 data output interface,
1.3.3 be the debugging input interface,
1.3.4 absorption magnet;
1.4 be mounting flange;
2 is indoor unit;
3 is cable.
Embodiment
See also Fig. 1 to shown in Figure 5, be the specific embodiment of the invention.
From Fig. 1 to Fig. 3, can find out:
The present invention is comprised of outdoor unit 1, indoor unit 2 and cable 3, and wherein: indoor unit 2 is human-computer interaction interface, and outdoor unit 1 includes antenna module 1.1, Multiple Business Management module 1.2, housing 1.3, mounting flange 1.4.And antenna module 1.1 places housing top, Multiple Business Management module 1.2 to be placed in one in the housing 1.3, and mounting flange 1.4 places housing 1.3 belows, and 4 mutually combine from top to bottom consists of an integral body, connects to form whole system through cable 3 and indoor unit 1.
As can be seen from Figure 4:
Described Multiple Business Management module 1.2 is modular construction, include: ARM flush bonding processor 1.2.1, synchronous dynamic data-carrier store SDRAM 1.2.2, erasable electronic memory FLASFH1.2.3, the special-purpose GPS/ Big Dipper two double mode baseband processing module 1.2.4, AD conversion module 1.2.5, down-converted module 1.2.6, Big Dipper generation module 1.2.7, RS232 serial interface module 1.2.8, radio frequency interface 1.2.9, data output interface 1.2.10, debugging input interface 1.2.11.Wherein:
The the 45th to 89 pin of described ARM flush bonding processor 1.2.1 is connected with the 3rd to 47 pin of synchronous dynamic data-carrier store SDRAM1.2.2 respectively successively; But its 92nd to 131 pin is connected with the 2nd to 41 pin that the FLASH electronics is wiped storer 1.2.3 respectively successively; Its 14th to 17 pin is connected with the 8th to 11 pin of Big Dipper generation processing module 1.2.7 respectively successively; Its 22nd to 45 pin is connected with the 12nd to 35 pin of baseband processing module 1.2.4 respectively successively; Its 2nd to 6 pin is connected with the 3rd to 7 pin of RS232 serial interface module 1.2.8 respectively successively.ARM flush bonding processor 1.2.1 receives the data from Big Dipper generation processing module 2.7 and baseband processing module 1.2.4, and the result after the computing is delivered to the RS232 serial interface module.
The 34th, 36 pin of described down-converted module 1.2.6 are connected with the 4th, 8 pin of AD conversion module 1.2.5 respectively successively; Its 3rd, 5,7,9 pin is connected with the 1st pin of the Big Dipper two radio frequency interface 1.2.9.1, the 1st pin of GPS radio frequency interface 1.2.9.2, the 1st, 2 pin of debugging input interface 1.2.11 respectively successively; Its 2nd pin output is connected with the 2nd pin of AD conversion module 1.2.5 and the 11st pin of baseband processing module 1.2.4.This unit receives from the Big Dipper binary signal of radio frequency interface 1.2.9.1 and the gps signal of 1.2.9.2, and is converted into intermediate-freuqncy signal and delivers to AD conversion module 1.2.5.
The the 16th to 19 pin of described AD conversion module 1.2.5 is connected with the 37th to 40 pin of baseband processing module 1.2.4 respectively successively; Its 21st to 24 pin is connected with the 41st to 44 pin of baseband processing module 1.2.4 respectively successively.This unit will be converted to digital signal and send into baseband processing module 1.2.4 from the intermediate-freuqncy signal of down-converted module 1.2.6.
The 1st, 2,5,6 pin of the described Big Dipper one module 1.2.7 successively respectively with the 1st, 2 pin of Big Dipper generation radio frequency interface 1.2.9.3, the 3rd, 4 pin of debugging input interface 1.2.11 connect.The positioning calculation function is realized by radio frequency interface 1.2.9.3 receiving and transmitting signal in this unit, and the result is sent to ARM flush bonding processor 1.2.1.
The 7th pin of described data output interface 1.2.10 is connected with the 9th pin of baseband processing module 1.2.4, and its 1st to 4 pin is connected with the 3rd to 7 pin of RS232 serial interface module 1.2.8 respectively successively.The data message that the pps pulse per second signal that baseband processing module 1.2.4 is sent in this unit and RS232 serial interface module 1.2.8 send is sent to data output interface 1.2.10, is the external interface of whole overall treatment unit.
As can be seen from Figure 5:
Described Multiple Business Management module 1.2 is modular construction, and its top is disposed with from left to right: the 1st pin of the 1st pin of the Big Dipper two radio frequency interface 1.2.9.1, the 1st pin of test input interface 1.2.11, GPS radio frequency interface 1.2.9.2, the 2nd pin of test input interface 1.2.11, the 1st pin of the Big Dipper one radio frequency interface 1.2.9.3, the 3rd pin of test input interface 1.2.11, totally 6 radio frequency interfaces; Its upper right side is provided with the 2nd pin of the Big Dipper one radio frequency interface 1.2.9.3, the 4th pin of test input interface 1.2.11 from top to bottom; Data output interface 1.2.10 is arranged on the outside, circuit board below, and all the other each modules need to evenly be arranged in the printed board according to treatment scheme.The mode that all modules is focused on a printed circuit board has improved the integrated level of system and the terseness of structure.
What be worth to specify is, ARM flush bonding processor 1.2.1 model is S3C2440 among the present invention, and the model of SDRAM 1.2.2 is IS42S32400, but to wipe the model of storer 1.2.3 be S29GL128 to the FLASH electronics; All the other each elements are technical grade product, and housing parts is the finishing cast member.
Above embodiment, but only be explanation technical characterictic of the present invention and embodiment, and its purpose is to make the person skilled in art can understand content of the present invention and implementation.Thus, conversion and modification that all designs according to the present invention are made all are included in the claim scope of the present invention, file an application according to Patent Law.
Claims (9)
1. the Position Fixing Navigation System based on the Big Dipper one/Big Dipper two/GPS three-mode includes outdoor unit (1), indoor unit (2) and cable (3), it is characterized in that:
Described outdoor unit (1) includes again antenna module (1.1), Multiple Business Management module (1.2), housing (1.3), mounting flange (1.4), and antenna module (1.1) places housing (1.3) top, and Multiple Business Management module (1.2) places in the housing (1.3), and mounting flange (1.4) places housing (1.3) below, 4 mutually combine from top to bottom consists of an integral body, then connects to form whole system through cable (3) and indoor unit (2).
2. the Position Fixing Navigation System based on the Big Dipper one/Big Dipper two/GPS three-mode as claimed in claim 1 is characterized in that:
Described antenna module (1.1) is provided with receiving antenna (1.1.1) and radio frequency power amplification module (1.1.2) from top to down in succession for lightning-arrest cap structure in it.
3. the Position Fixing Navigation System based on the Big Dipper one/Big Dipper two/GPS three-mode as claimed in claim 1 is characterized in that:
Described housing (1.3) is circular cylindrical cavity formula structural member, and its top port is provided with O-ring seal (1.3.1), and the left side is provided with data output (1.3.2), and the right side is provided with debugging interface 1.3.3, and the bottom is provided with absorption magnet (1.3.4).
4. the Position Fixing Navigation System based on the Big Dipper one/Big Dipper two/GPS three-mode as claimed in claim 1 is characterized in that:
Described Multiple Business Management module (1.2) is modular construction, include: ARM flush bonding processor (1.2.1), synchronous dynamic data-carrier store SDRAM (1.2.2), erasable electronic memory FLASFH (1.2.3), the special-purpose GPS/ Big Dipper two double mode baseband processing modules (1.2.4), AD conversion module (1.2.5), down-converted module (1.2.6), Big Dipper generation module (1.2.7), RS232 serial interface module (1.2.8), radio frequency interface (1.2.9), data output interface (1.2.10) and debugging input interface (1.2.11) and its top are disposed with from left to right: the 1st pin of the Big Dipper two radio frequency interface 1.2.9.1, the 1st pin of test input interface 1.2.11, the 1st pin of GPS radio frequency interface 1.2.9.2, the 2nd pin of test input interface 1.2.11, the 1st pin of the Big Dipper one radio frequency interface 1.2.9.3, the 3rd pin of test input interface 1.2.11, totally 6 radio frequency interfaces; Its upper right side is provided with the 2nd pin of the Big Dipper one radio frequency interface 1.2.9.3, the 4th pin of test input interface 1.2.11 from top to bottom; Data output interface 1.2.10 is arranged on the outside, circuit board below, and all the other each modules are arranged in the printed board.
5. the Position Fixing Navigation System based on the Big Dipper one/Big Dipper two/GPS three-mode as claimed in claim 4 is characterized in that:
The the 45th to 89 pin of described ARM flush bonding processor (1.2.1) successively respectively with synchronous dynamic data-carrier store SDRAM(1.2.2) the 3rd to 47 pin be connected; But its 92nd to 131 pin is connected with the 2nd to 41 pin that the FLASH electronics is wiped storer (1.2.3) respectively successively; Its 14th to 17 pin is connected with the 8th to 11 pin of Big Dipper generation processing module (1.2.7) respectively successively; Its 22nd to 45 pin is connected with the 12nd to 35 pin of baseband processing module (1.2.4) respectively successively; Its 2nd to 6 pin is connected with the 3rd to 7 pin of RS232 serial interface module (1.2.8) respectively successively.
6. the Position Fixing Navigation System based on the Big Dipper one/Big Dipper two/GPS three-mode as claimed in claim 4 is characterized in that:
The 34th, 36 pin of described down-converted module (1.2.6) are connected with the 4th, 8 pin of AD conversion module (1.2.5) respectively successively; Its 3rd, 5,7,9 pin is connected with the 1st pin of the Big Dipper two radio frequency interfaces (1.2.9.1), the 1st pin of GPS radio frequency interface (1.2.9.2), the 1st, 2 pin of debugging input interface (1.2.11) respectively successively; Its 2nd pin output is connected with the 2nd pin of AD conversion module (1.2.5) and the 11st pin of baseband processing module (1.2.4).
7. the Position Fixing Navigation System based on the Big Dipper one/Big Dipper two/GPS three-mode as claimed in claim 4 is characterized in that:
The the 16th to 19 pin of described AD conversion module (1.2.5) is connected with the 37th to 40 pin of baseband processing module (1.2.4) respectively successively; Its 21st to 24 pin is connected with the 41st to 44 pin of baseband processing module (1.2.4) respectively successively.
8. the Position Fixing Navigation System based on the Big Dipper one/Big Dipper two/GPS three-mode as claimed in claim 4 is characterized in that:
The 1st, 2,5,6 pin of the described Big Dipper one module (1.2.7) successively respectively with the 1st, 2 pin of Big Dipper generation radio frequency interface (1.2.9.3), the 3rd, 4 pin of debugging input interface (1.2.11) connect.
9. the Position Fixing Navigation System based on the Big Dipper one/Big Dipper two/GPS three-mode as claimed in claim 4 is characterized in that:
The 7th pin of described data output interface (1.2.10) is connected with the 9th pin of baseband processing module (1.2.4), and its 1st to 4 pin is connected with the 3rd to 7 pin of RS232 serial interface module 1.2.8 respectively successively.
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| CN201210515238.9A CN103018760B (en) | 2012-12-05 | 2012-12-05 | Tri-mode positioning and navigation system based on BD-1 (Beidou-1)/BD-2 (Beidou-2)/GPS (global position system) |
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