CN113708856A - Hand-held type basic station information and signal strength collection system - Google Patents
Hand-held type basic station information and signal strength collection system Download PDFInfo
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- CN113708856A CN113708856A CN202110930528.9A CN202110930528A CN113708856A CN 113708856 A CN113708856 A CN 113708856A CN 202110930528 A CN202110930528 A CN 202110930528A CN 113708856 A CN113708856 A CN 113708856A
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- 239000003990 capacitor Substances 0.000 claims abstract description 96
- 238000004891 communication Methods 0.000 claims abstract description 30
- 239000011324 bead Substances 0.000 claims abstract description 29
- 230000035945 sensitivity Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 16
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/318—Received signal strength
Abstract
The invention provides a handheld base station information and signal strength acquisition device which comprises a control circuit, a communication circuit, a power supply circuit and a positioning circuit, wherein the control circuit is respectively and electrically connected with the communication circuit, the power supply circuit and the positioning circuit, the communication circuit is respectively and electrically connected with the power supply circuit and the positioning circuit, the communication circuit comprises a first chip, a first antenna, a second antenna and a first positioning signal input unit, the first chip is respectively and electrically connected with the first antenna, the second antenna and the first positioning signal input unit, the positioning circuit comprises a first positioning antenna, the first positioning antenna is electrically connected with the first positioning signal input unit, the first positioning signal input unit comprises a first resistor, a first magnetic bead, a first inductor, a first amplifier and first to third capacitors, and one end of the first capacitor is electrically connected with the first positioning antenna. The handheld base station information and signal strength acquisition device can enhance the sensitivity of the antenna and ensure the accuracy of signal acquisition.
Description
Technical Field
The invention relates to the field of mobile internet, in particular to a handheld base station information and signal intensity acquisition device.
Background
With the development of wireless communication technology, network operators have gradually built complex networks with 2G/3G/4G interworking coexistence. Network operators usually know the base station information and signal strength of each place through a base station information acquisition device, but the existing base station information acquisition device is designed with a single antenna, has low sensitivity, cannot acquire a signal frequency band as required, and cannot display relevant information such as relevant settings, signal frequency bands and signal strength in real time. Therefore, it is necessary to design a new base station information acquisition device to solve the above problems.
Disclosure of Invention
In view of the problems in the prior art, an object of the present invention is to provide a handheld base station information and signal strength acquisition device, which can enhance the sensitivity of an antenna and ensure the accuracy of signal acquisition.
In order to achieve the above object, the present invention provides a handheld base station information and signal strength acquisition device, which includes a control circuit, a communication circuit, a power circuit, and a positioning circuit, wherein the control circuit is electrically connected to the communication circuit, the power circuit, and the positioning circuit, respectively, the power circuit is electrically connected to the communication circuit and the positioning circuit, respectively, the communication circuit is electrically connected to the positioning circuit, the communication circuit includes a first chip, a first antenna, a second antenna, and a first positioning signal input unit, the first chip is electrically connected to the first antenna, the second antenna, and the first positioning signal input unit, respectively, the positioning circuit includes a first positioning antenna, the first positioning antenna is electrically connected to the first positioning signal input unit, and the first positioning signal input unit includes a first resistance resistor, The first magnetic bead, the first inductor, the first amplifier and the first to third capacitors, wherein one end of the first capacitor is electrically connected with the first positioning antenna, the other end of the first capacitor is electrically connected with the first connection end of the first inductor, the second connection end of the first inductor is electrically connected with the first input connection end of the first amplifier, one end of the second capacitor is grounded, the other end of the second capacitor is respectively electrically connected with the first connection end of the first magnetic bead and the power circuit, the second connection end of the first magnetic bead is electrically connected with the second power connection end of the first amplifier, one end of the third capacitor is grounded, the other end of the third capacitor is electrically connected with the second connection end of the first magnetic bead, and the first resistor is connected between the third output connection end of the first amplifier and the first connection end of the first chip.
Optionally, the first chip is an LTE _ EC21 or LTE _ EC25 series chip.
Optionally, the capacitance value of the first capacitor is 470pF, the capacitance value of the second capacitor is 22pF, the capacitance value of the third capacitor is 100nF, and the inductance value of the first inductor is 6.2 nH.
As an optional scheme, the positioning circuit includes a second positioning signal input unit, and the second positioning signal input unit is electrically connected to the first positioning antenna.
As an optional solution, the second positioning signal input unit includes a second chip, fourth to eighth capacitors, a first filter, second to third inductors, a second amplifier, and a second magnetic bead, one end of the fourth capacitor is electrically connected to the first positioning antenna, the other end of the fourth capacitor is electrically connected to the first input connection end of the first filter, one end of the fifth capacitor is electrically connected to the second output connection end of the first filter, the other end of the fifth capacitor is connected to the first connection end of the second inductor, the second connection end of the second inductor is electrically connected to the first input connection end of the second amplifier, the first connection end of the second magnetic bead is electrically connected to the power circuit, the second connection end of the second magnetic bead is electrically connected to the second power connection end of the second amplifier, one end of the sixth capacitor is grounded, and the other end of the sixth capacitor is electrically connected to the second connection end of the second magnetic bead, one end of the seventh capacitor is electrically connected with the third output connection end of the second amplifier, the other end of the seventh capacitor is electrically connected with the first connection end of the third inductor, one end of the eighth capacitor is grounded, the other end of the eighth capacitor is connected with the first connection end of the third inductor, and the second connection end of the third inductor is electrically connected with the first connection end of the second chip.
Optionally, the second chip is a UBLOX _ G7020_ KT chip.
Optionally, the capacitance value of the fourth capacitor is equal to the capacitance value of the seventh capacitor, and the capacitance value of the fifth capacitor is ten times the capacitance value of the fourth capacitor.
As an optional scheme, capacitance values of the fourth capacitor and the seventh capacitor are both 47pF, a capacitance value of the fifth capacitor is 470pF, a capacitance value of the sixth capacitor is 0.1uF, a capacitance value of the eighth capacitor is 1.8pF, an inductance value of the second inductor is 6.2nH, and an inductance value of the third inductor is 10 nH.
As a selectable scheme, the handheld base station information and signal strength acquisition device further comprises a key input unit and a display unit, and the key input unit and the display unit are respectively electrically connected with the control circuit.
As a selectable scheme, the handheld base station information and signal strength acquisition device further comprises a host, the control circuit, the communication circuit, the power circuit and the positioning circuit are installed inside the host, and the key input unit and the display unit are installed outside the host.
Compared with the prior art, the handheld base station information and signal strength acquisition device provided by the invention has the advantages that the sensitivity of the antenna is enhanced, the accuracy of signal acquisition is ensured, and related information such as related settings, frequency bands, signal strength and the like can be displayed in real time through a screen.
The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.
Drawings
Fig. 1 is a schematic block diagram of a circuit structure of an embodiment of a handheld base station information and signal strength acquisition device according to the present invention;
FIG. 2 is a schematic diagram of a circuit schematic of a control circuit of the handheld base station information and signal strength acquisition device according to the present invention;
FIG. 3 is a schematic diagram of a communication circuit of the handheld base station information and signal strength acquisition device according to the present invention;
FIG. 4 is a schematic diagram of a circuit schematic of a positioning circuit of the handheld base station information and signal strength acquisition device according to the present invention;
FIG. 5 is a schematic diagram of the circuit of the power supply of the handheld base station information and signal strength acquisition device according to the present invention;
FIG. 6 is a schematic diagram of a circuit schematic diagram of a key input unit of the handheld base station information and signal strength acquisition device according to the present invention;
fig. 7 is a schematic circuit diagram of a display unit of the handheld base station information and signal strength acquisition device according to the present invention.
Detailed Description
In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.
Referring to fig. 1 to 7, fig. 1 is a schematic block diagram of a circuit structure of an embodiment of a handheld base station information and signal strength acquisition device according to the present invention; FIG. 2 is a schematic diagram of a circuit schematic of a control circuit of the handheld base station information and signal strength acquisition device according to the present invention; FIG. 3 is a schematic diagram of a communication circuit of the handheld base station information and signal strength acquisition device according to the present invention; FIG. 4 is a schematic diagram of a circuit schematic of a positioning circuit of the handheld base station information and signal strength acquisition device according to the present invention; FIG. 5 is a schematic diagram of the circuit of the power supply of the handheld base station information and signal strength acquisition device according to the present invention; FIG. 6 is a schematic diagram of a circuit schematic diagram of a key input unit of the handheld base station information and signal strength acquisition device according to the present invention; fig. 7 is a schematic circuit diagram of a display unit of the handheld base station information and signal strength acquisition device according to the present invention. The invention discloses a handheld base station information and signal intensity acquisition device which comprises a host, a control circuit, a communication circuit, a power circuit, a positioning circuit, a key input unit and a display unit, wherein the control circuit, the communication circuit, the power circuit and the positioning circuit are arranged in the host, and the key input unit and the display unit are arranged outside the host. The control circuit is respectively and electrically connected with the positioning circuit, the communication circuit, the key input unit and the display unit, the communication circuit is electrically connected with the positioning circuit, and the power supply circuit is respectively and electrically connected with the control circuit, the positioning circuit, the communication circuit, the key input unit and the display unit so as to provide electric energy. The display unit is, for example, a display screen, and the specific size may be set as required, which is not limited herein. When the device is used, a worker can input and set a frequency band required to be collected through the keys and display related information such as a related frequency band and signal intensity in real time through the display unit.
The control circuit adopts an STM32F103 series chip as a central processing unit, the central processing unit of the control circuit is matched with a peripheral circuit for use, and partial peripheral circuits in the control circuit, the display unit, the key input unit, the positioning circuit and the communication circuit belong to the prior art in the field, so that the control circuit is not described in detail in the application. In addition, the control method of the control circuit to the communication circuit, the positioning circuit and the display unit also belongs to the conventional technology in the field, and in view of the fact that the present application mainly protects the circuit structure part, not the software control part, the following mainly takes description of the hardware circuit, especially description of the hardware circuit matched with the communication circuit and the positioning circuit.
IN the present application, the communication circuit includes a first chip U401, a first antenna J402, a second antenna J401 and a first positioning signal input unit, the first chip U401 is electrically connected to the first antenna J402, the second antenna J401 and the first positioning signal input unit respectively, the positioning circuit includes a first positioning antenna J403, the first positioning antenna J403 is electrically connected to the first positioning signal input unit, the first positioning signal input unit includes a first resistor R421, a first magnetic bead B401, a first inductor L401, a first amplifier U404, a first capacitor C420, a second capacitor C418 and a third capacitor C417, one end of the first capacitor C420 is electrically connected to the first positioning antenna J403, the other end is electrically connected to a first connection end of the first inductor L401, a second connection end of the first inductor L401 is electrically connected to a first input connection end IN of the first amplifier U404, one end of the second capacitor C418 is grounded, the other end is electrically connected to a first end of the first magnetic bead B and a power circuit 401, the second end of the first magnetic bead B401 is electrically connected to the second power connection terminal VCC of the first amplifier U404, one end of the third capacitor C417 is grounded, the other end of the third capacitor C417 is electrically connected to the second connection terminal of the first magnetic bead B401, and the first resistor R421 is connected between the third output connection terminal OUT of the first amplifier U404 and the first connection terminal ANT _ GNSS of the first chip.
The first chip U401 is an LTE _ EC21 or LTE _ EC25 chip, the first amplifier U404 is, for example, a MAX2659 amplifier, the first magnetic bead B401 is, for example, a BLM15AG221SN1D magnetic bead, the first inductor L401 is, for example, an IND0402 inductor, the inductance of the first inductor L401 is, for example, 6.2nH, the capacitance of the first capacitor C420 is, for example, 470pF, the capacitance of the second capacitor C418 is, for example, 22pF, the capacitance of the third capacitor C417 is, for example, 100nF, and the resistance of the first resistor R421 is, for example, 0 to 1 Ω.
In this embodiment, the positioning circuit includes a second positioning signal input unit electrically connected to the first positioning antenna J403. The second positioning signal input unit comprises a second chip U304, a fourth capacitor C301, a fifth capacitor C302, a sixth capacitor C304, a seventh capacitor C305, an eighth capacitor C306, a first filter U301, a second inductor L301, a third inductor L302, a second amplifier U302 and a second magnetic bead B301, one end of the fourth capacitor C301 is electrically connected with the first positioning antenna J403, the other end of the fourth capacitor C301 is electrically connected with a first input connection end IN of the first filter U301, one end of the fifth capacitor C302 is electrically connected with a second output connection end OUT of the first filter U301, the other end of the fifth capacitor C302 is electrically connected with a first connection end of the second inductor L301, a second connection end of the second inductor L301 is electrically connected with a first input connection end IN of the second amplifier U302, a first connection end of the second magnetic bead B301 is electrically connected with a power supply circuit, a second connection end of the second magnetic bead B301 is electrically connected with a second power supply connection end VCC of the second amplifier U302, one end of the sixth capacitor C304 is grounded, the other end of the sixth capacitor C304 is electrically connected to the second connection end of the second magnetic bead B301, one end of the seventh capacitor C305 is electrically connected to the third output connection end OUT of the second amplifier U302, the other end of the seventh capacitor C305 is electrically connected to the first connection end of the third inductor L302, one end of the eighth capacitor C306 is grounded, the other end of the eighth capacitor C is connected to the first connection end of the third inductor L302, and the second connection end of the third inductor L302 is electrically connected to the first connection end LNA _ IN of the second chip U304.
The second chip U304 is a UBLOX _ G7020_ KT chip, the first filter U301 is, for example, a SAFEB1G57KE0F00 filter, the second amplifier U302 is, for example, a MAX2659 amplifier, the second magnetic bead B301 is, for example, a BLM15AG221SN1D magnetic bead, the second inductor L301 and the third inductor L302 are both IND0402 inductors, the inductance value of the second inductor L301 is, for example, 6.2nH, the inductance value of the third inductor L302 is, for example, 10nH, the capacitance value of the fourth capacitor C301 is equal to the capacitance value of the seventh capacitor C305, the capacitance value of the fifth capacitor C302 is ten times the capacitance value of the fourth capacitor C301, the capacitance values of the fourth capacitor C301 and the seventh capacitor C305 are, for example, 47pF, the capacitance value of the fifth capacitor C302 is, for example, 470pF, the capacitance value of the sixth capacitor C304 is, for example, 0.1uF, and the capacitance value of the eighth capacitor C306 is, for example, 1.8 pF. In practical application, parameter values of all components can be adjusted adaptively according to actual needs.
The working principle of the invention is as follows: the key input unit is provided with a first antenna J402, a second antenna J401 and a signal frequency range which needs to be collected by a first positioning antenna J403, and transmits setting information to the control unit, the control unit transmits the setting information to the first chip U401 and the second chip U304, the first chip U401 of the communication unit obtains positioning information through the first positioning input unit, and transmits the positioning information to the remote control terminal through the first antenna J402 and the second antenna J401, and the second chip U304 of the positioning unit obtains the positioning information through the second positioning input unit, and transmits the positioning information to the control unit.
In summary, the handheld base station information and signal strength acquisition device of the present invention can enhance the sensitivity of the antenna and ensure the accuracy of signal acquisition by arranging the dual antenna on the communication circuit and the positioning antenna on the positioning circuit, and can set the frequency band to be acquired by the key and display the relevant information such as the relevant setting, frequency band, signal strength, etc. in real time by the screen.
The above detailed description of the preferred embodiments is intended to more clearly illustrate the features and spirit of the present invention, and is not intended to limit the scope of the present invention by the preferred embodiments disclosed above. On the contrary, it is intended to cover various modifications and equivalent arrangements included within the scope of the appended claims. The scope of the invention is therefore to be accorded the broadest interpretation so as to encompass all such modifications and equivalent arrangements as is within the scope of the appended claims.
Claims (10)
1. The utility model provides a hand-held type base station information and signal intensity collection system, includes control circuit, communication circuit, power supply circuit, positioning circuit, control circuit respectively with communication circuit power supply circuit with positioning circuit electric connection, power supply circuit respectively with communication circuit positioning circuit electric connection, communication circuit with positioning circuit electric connection, characterized in that, communication circuit includes first chip, first antenna, second antenna and first positioning signal input unit, first chip respectively with first antenna, second antenna and first positioning signal input unit electric connection, positioning circuit includes first positioning antenna, first positioning antenna with first positioning signal input unit electric connection, first positioning signal input unit includes first resistance, The first magnetic bead, the first inductor, the first amplifier and the first to third capacitors, wherein one end of the first capacitor is electrically connected with the first positioning antenna, the other end of the first capacitor is electrically connected with the first connection end of the first inductor, the second connection end of the first inductor is electrically connected with the first input connection end of the first amplifier, one end of the second capacitor is grounded, the other end of the second capacitor is respectively electrically connected with the first connection end of the first magnetic bead and the power circuit, the second connection end of the first magnetic bead is electrically connected with the second power connection end of the first amplifier, one end of the third capacitor is grounded, the other end of the third capacitor is electrically connected with the second connection end of the first magnetic bead, and the first resistor is connected between the third output connection end of the first amplifier and the first connection end of the first chip.
2. The device as claimed in claim 1, wherein the first chip is a LTE _ EC21 or LTE _ EC25 series chip.
3. The apparatus as claimed in claim 2, wherein the capacitance of the first capacitor is 470pF, the capacitance of the second capacitor is 22pF, the capacitance of the third capacitor is 100nF, and the inductance of the first inductor is 6.2 nH.
4. The device as claimed in claim 1, wherein the positioning circuit comprises a second positioning signal input unit, the second positioning signal input unit being electrically connected to the first positioning antenna.
5. The apparatus as claimed in claim 4, wherein the second positioning signal input unit comprises a second chip, fourth to eighth capacitors, a first filter, second to third inductors, a second amplifier and a second magnetic bead, one end of the fourth capacitor is electrically connected to the first positioning antenna, the other end of the fourth capacitor is electrically connected to the first input connection terminal of the first filter, one end of the fifth capacitor is electrically connected to the second output connection terminal of the first filter, the other end of the fifth capacitor is connected to the first connection terminal of the second inductor, the second connection terminal of the second inductor is electrically connected to the first input connection terminal of the second amplifier, the first connection terminal of the second magnetic bead is electrically connected to the power circuit, the second connection terminal of the second magnetic bead is electrically connected to the second power connection terminal of the second amplifier, one end of the sixth capacitor is grounded, the other end of the sixth capacitor is electrically connected with the second connecting end of the second magnetic bead, one end of the seventh capacitor is electrically connected with the third output connecting end of the second amplifier, the other end of the seventh capacitor is electrically connected with the first connecting end of the third inductor, one end of the eighth capacitor is grounded, the other end of the eighth capacitor is connected with the first connecting end of the third inductor, and the second connecting end of the third inductor is electrically connected with the first connecting end of the second chip.
6. The apparatus of claim 5 wherein said second chip is a UBLOX _ G7020_ KT chip.
7. The apparatus as claimed in claim 6, wherein the capacitance of the fourth capacitor is equal to the capacitance of the seventh capacitor, and the capacitance of the fifth capacitor is ten times the capacitance of the fourth capacitor.
8. The apparatus as claimed in claim 7, wherein the capacitance values of the fourth capacitor and the seventh capacitor are 47pF, the capacitance value of the fifth capacitor is 470pF, the capacitance value of the sixth capacitor is 0.1uF, the capacitance value of the eighth capacitor is 1.8pF, the inductance value of the second inductor is 6.2nH, and the inductance value of the third inductor is 10 nH.
9. The device as claimed in claim 1, further comprising a key input unit and a display unit, wherein the key input unit and the display unit are electrically connected to the control circuit respectively.
10. The device as claimed in claim 9, further comprising a host, wherein the control circuit, the communication circuit, the power circuit, and the positioning circuit are installed inside the host, and the key input unit and the display unit are installed outside the host.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110930528.9A CN113708856A (en) | 2021-08-13 | 2021-08-13 | Hand-held type basic station information and signal strength collection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110930528.9A CN113708856A (en) | 2021-08-13 | 2021-08-13 | Hand-held type basic station information and signal strength collection system |
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| Publication Number | Publication Date |
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| CN113708856A true CN113708856A (en) | 2021-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110930528.9A Pending CN113708856A (en) | 2021-08-13 | 2021-08-13 | Hand-held type basic station information and signal strength collection system |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3571716A (en) * | 1968-04-16 | 1971-03-23 | Motorola Inc | Electronically tuned antenna system |
| US4072953A (en) * | 1976-07-29 | 1978-02-07 | Societa Italiana Vetro Siv S.P.A. | Multiband antenna for window panes |
| US20070213017A1 (en) * | 2006-03-09 | 2007-09-13 | Yin-Yu Chen | Wireless Communication Device Capable of Switching to an External Antenna Module or an Internal Antenna Module |
| US20150097634A1 (en) * | 2013-10-08 | 2015-04-09 | Blackberry Limited | Millimeter-wave broadband transition of microstrip line on thin to thick substrates |
| US20170266429A1 (en) * | 2016-03-17 | 2017-09-21 | Ulrich Gmbh & Co. Kg | Connecting system, injection system for the injection of a medical fluid and method of operating such an injection system |
| CN209787163U (en) * | 2019-06-24 | 2019-12-13 | 维沃移动通信有限公司 | Positioning circuit and terminal |
| US20200355783A1 (en) * | 2018-04-28 | 2020-11-12 | Ninebot (Beijing) Tech. Co., Ltd | Positioning communication device, positioning method, and computer storage medium |
| CN212694057U (en) * | 2020-09-09 | 2021-03-12 | 深圳市几米物联有限公司 | Positioning circuit and positioning device |
| CN112649816A (en) * | 2020-09-09 | 2021-04-13 | 深圳市几米物联有限公司 | Positioning circuit and positioning device |
-
2021
- 2021-08-13 CN CN202110930528.9A patent/CN113708856A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3571716A (en) * | 1968-04-16 | 1971-03-23 | Motorola Inc | Electronically tuned antenna system |
| US4072953A (en) * | 1976-07-29 | 1978-02-07 | Societa Italiana Vetro Siv S.P.A. | Multiband antenna for window panes |
| US20070213017A1 (en) * | 2006-03-09 | 2007-09-13 | Yin-Yu Chen | Wireless Communication Device Capable of Switching to an External Antenna Module or an Internal Antenna Module |
| US20150097634A1 (en) * | 2013-10-08 | 2015-04-09 | Blackberry Limited | Millimeter-wave broadband transition of microstrip line on thin to thick substrates |
| US20170266429A1 (en) * | 2016-03-17 | 2017-09-21 | Ulrich Gmbh & Co. Kg | Connecting system, injection system for the injection of a medical fluid and method of operating such an injection system |
| US20200355783A1 (en) * | 2018-04-28 | 2020-11-12 | Ninebot (Beijing) Tech. Co., Ltd | Positioning communication device, positioning method, and computer storage medium |
| CN209787163U (en) * | 2019-06-24 | 2019-12-13 | 维沃移动通信有限公司 | Positioning circuit and terminal |
| CN212694057U (en) * | 2020-09-09 | 2021-03-12 | 深圳市几米物联有限公司 | Positioning circuit and positioning device |
| CN112649816A (en) * | 2020-09-09 | 2021-04-13 | 深圳市几米物联有限公司 | Positioning circuit and positioning device |
Non-Patent Citations (2)
| Title |
|---|
| LI JINLING;ZHANG JINWEI;GUO LI;: "On the monitoring model of reference point of VLBI antenna", SCIENCE CHINA(PHYSICS, MECHANICS & ASTRONOMY), no. 10, 1 October 2013 (2013-10-01) * |
| 朱民, 鲍远律, 张旺生: "GPS车载卫星地球站天线自动定位系统", 自动化与仪表, no. 05, 5 October 1998 (1998-10-05) * |
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