CN113311382B - Single-channel radio tracking system and method - Google Patents
Single-channel radio tracking system and method Download PDFInfo
- Publication number
- CN113311382B CN113311382B CN202010120320.6A CN202010120320A CN113311382B CN 113311382 B CN113311382 B CN 113311382B CN 202010120320 A CN202010120320 A CN 202010120320A CN 113311382 B CN113311382 B CN 113311382B
- Authority
- CN
- China
- Prior art keywords
- module
- radio
- radio frequency
- antenna array
- servo motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D3/00—Control of position or direction
- G05D3/12—Control of position or direction using feedback
- G05D3/14—Control of position or direction using feedback using an analogue comparing device
-
- 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
- G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
- G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
- G01S3/14—Systems for determining direction or deviation from predetermined direction
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The invention discloses a single radio frequency channel radio tracking system and a method, which comprises an antenna array, a radio frequency switch module, a receiving radio frequency channel module, a signal acquisition processing control module, a rotating platform module and a servo motor module. The antenna array is connected with the radio frequency switch module, the radio frequency switch module is connected with the radio frequency receiving channel module, the radio frequency receiving channel module is connected with the signal acquisition processing control module, and the signal acquisition processing control module periodically controls the radio frequency switch and controls the servo motor module to drive the rotary table. Aiming at the radio automatic tracking requirements in the fields of communication, radar, electronic countermeasure and consumer electronics, the radio frequency switch is adopted to alternately switch on each unit of the antenna array, the frequency spectrum characteristics of the received signals are analyzed, and the servo motor is driven to enable the antenna array to track the incident direction of the radio signals in real time. The invention is suitable for the radio tracking system with low cost and low complexity.
Description
Technical Field
The present invention relates to the field of radio engineering technology, and more particularly, to a system and method for real-time tracking of radio signals.
Background
Radio tracking has wide application in satellite communication, airborne mobile communication and anti-radiation missile. The existing radio tracking system mostly adopts a radio direction finding technology, firstly utilizes an array antenna to measure the direction of a target to be tracked, and then drives a servo part to point to the target to be tracked. Radio direction finding usually adopts a plurality of radio frequency channels, and the consistency of amplitude phase has a great influence on the direction finding performance, thereby indirectly influencing the tracking effect.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a radio tracking system and a radio tracking method of a single radio frequency channel, which have simple structure and signal processing.
The invention relates to a single-channel radio tracking system, which comprises an antenna array, a radio frequency switch module, a radio frequency receiving channel module, a data acquisition processing control module, an output display module, a rotating platform module and a servo motor module, wherein:
the antenna array is used for receiving a radio signal incident in space;
the radio frequency switch module is used for periodically gating each unit of the antenna array;
the receiving radio frequency channel module performs low-noise amplification, down-conversion and low-pass filtering on the received radio signal to obtain an intermediate frequency signal;
the data acquisition processing control module acquires data of the received intermediate frequency signal, analyzes the data in a digital domain, obtains a radio incidence direction by comparing the relative relation of frequency spectrums of the fundamental frequency component and the first harmonic component, and controls the servo motor module;
the output display module controls the periodic opening and closing of the radio frequency switch module through outputting a logic signal;
the rotating platform module displays the obtained radio incidence direction information through the output display module;
the servo motor module is used for driving the antenna array, so that the normal direction of the antenna array tracks the target direction.
Preferably, the antenna array is connected with a radio frequency switch module, the radio frequency switch module is connected with a receiving radio frequency channel module, the receiving radio frequency channel module is connected with a data acquisition processing control module, the data acquisition processing control module is connected with the radio frequency switch module, an output display module and a servo motor module, and the servo motor module is connected with the rotating platform module.
Preferably, the antenna array adopts a directional antenna array formed by two antenna units.
Preferably, the radio frequency switch module is a single-pole double-throw radio frequency switch, or a combination of a power divider and a single-pole single-throw switch.
Preferably, the data acquisition processing control module controls the radio frequency switch module to periodically switch on the two antenna units.
Preferably, the data acquisition processing control module analyzes the frequency spectrum of the received signal, and controls the servo motor module by using the ratio of the first harmonic component to the fundamental component in the received signal as a driving signal, and when the ratio reaches the minimum value, the direction pointed by the antenna array is the direction to be tracked.
The invention provides a single-channel radio tracking method, which comprises the following steps:
a receiving step: the antenna array receives a radio signal incident in space;
a gating step: the radio frequency switch module periodically gates each unit of the antenna array;
a signal processing step: the receiving radio frequency channel module performs low-noise amplification, down-conversion and low-pass filtering on the received radio signal to obtain an intermediate frequency signal;
analyzing and judging: the data acquisition processing control module acquires data of the received intermediate frequency signal, analyzes the data in a digital domain, obtains a radio incidence direction by comparing the relative relation of frequency spectrums of the fundamental frequency component and the first harmonic component, and controls the servo motor module.
Preferably, the analyzing and determining step includes:
and when the ratio of the first harmonic component to the fundamental component is increased, controlling the servo motor module (7) to rotate in the reverse direction, and when the ratio of the first harmonic component to the fundamental component reaches the minimum value, finishing tracking.
Compared with the prior art, the improvement of the invention in function and performance is as follows:
1) The hardware structure is simple, a plurality of radio frequency channels are not needed, and the direction finding is carried out on the tracking signals.
2) The algorithm is simple to implement, and only the ratio of the first harmonic component to the fundamental component in the received signal needs to be compared.
3) Can be realized by adopting a full analog circuit. The ratio of the first harmonic component to the fundamental component can be realized by using a band-pass filter, a power detection module and an operational amplifier. Thus, real-time tracking of the target can be achieved only by using an analog circuit.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings: .
FIGS. 1 and 2 are block diagrams of a single channel radio tracking system;
FIG. 3 is a flow chart of the operation of a single channel radio tracking system;
FIG. 4 is a power spectrum of a received signal when a target to be tracked is at-3 °;
FIG. 5 is a power spectrum of a received signal when a target to be tracked is at +2 °;
FIG. 6 is a power spectrum of a received signal when a target to be tracked is at 0 °;
fig. 7 shows the ratio of the first harmonic component to the fundamental component in the received signal when the target to be tracked is in different directions.
Detailed Description
The following examples illustrate the invention in detail: the embodiment is implemented on the premise of the technical scheme of the invention, and gives a detailed implementation mode and a specific operation process. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention.
Please refer to fig. 1 to 7.
Fig. 1 and 2 show the basic structure block diagram of a single-channel radio tracking system. Including antenna array, radio frequency switch module, receipt radio frequency passageway module, data acquisition processing control module, output display module, revolving stage module and servo motor module, the antenna array is connected with radio frequency switch module, radio frequency switch module with receive radio frequency passageway module and be connected, it is connected with data acquisition processing control module to receive radio frequency passageway module, data acquisition processing control module is connected with radio frequency switch module, output display module and servo motor module, servo motor module is connected with the revolving stage module. The antenna array is used for receiving a radio signal incident in space; the radio frequency switch module is used for periodically gating each unit of the antenna array; the receiving radio frequency channel module performs low-noise amplification, down-conversion and low-pass filtering on the received radio signal to obtain an intermediate frequency signal; the data acquisition processing control module acquires data of the received intermediate frequency signal, analyzes the data in a digital domain, obtains a radio incidence direction by comparing the relative relation of frequency spectrums of the fundamental frequency component and the first harmonic component, and controls the servo motor module; the output display module controls the periodic opening and closing of the radio frequency switch module through outputting a logic signal; the rotating platform module displays the obtained radio incidence direction information through the output display module; the servo motor module is used for driving the antenna array, so that the normal direction of the antenna array tracks the target direction. The signal acquisition processing control module controls the radio frequency switch to periodically gate the two antenna units. And carrying out analog-to-digital conversion on the received tracking signal after low-noise amplification, down-conversion and low-pass filtering. In the signal acquisition processing control module, the frequency spectrum of the received tracking signal is analyzed, the ratio of the first harmonic component to the fundamental component is calculated, and a servo motor is driven to rotate the whole system.
Figure 3 shows the workflow of a single channel radio tracking system. After the system starts to work, the signal acquisition processing control module calculates the ratio of the first harmonic component to the fundamental component in the received tracking signal. If the servo motor controls the rotary table to rotate for a small angle, the ratio of the first harmonic component to the fundamental component is increased, the rotary table is indicated to deviate from the target to be tracked in the rotating direction, and the rotary table is required to rotate in the opposite direction; and if the ratio of the first harmonic component to the fundamental component is reduced, indicating that the rotating direction of the rotary table is approaching the target to be tracked. And when the ratio of the first harmonic component to the fundamental component reaches the minimum value, the normal direction of the antenna array points to the target to be tracked, and the tracking is finished.
Example (b): single channel radio tracking
The tracking signal is a single-frequency signal with the carrier frequency of 1GHz, and the distance between two antenna units of the single-channel radio tracking system is 15cm. The signal acquisition processing control module controls the single-pole double-throw radio frequency switch to be periodically connected with the two antenna units, the modulation period is 100us, the signal-to-noise ratio of the system is 10dB, signals of 10 modulation periods are acquired for spectrum analysis, and the sampling rate is 10GSPS. When the normal included angle between the target to be tracked and the antenna array is-3 degrees, the frequency spectrum of the received tracking signal after passing through the radio frequency switch is as shown in fig. 4, as can be seen from the figure, after periodic modulation, the received tracking signal contains a fundamental component (at 1 GHz) and a harmonic component, and the frequency interval of the harmonic component is equal to the modulation frequency (10 MHz); when the normal included angle between the target to be tracked and the antenna array is +2 degrees, the frequency spectrum of the tracking signal received after passing through the radio frequency switch is shown in the attached figure 5; when the target to be tracked is located at the normal direction of the antenna array, the frequency spectrum of the tracking signal received after passing through the radio frequency switch is as shown in fig. 6. Comparing fig. 4, fig. 5 and fig. 6, it can be known that when the first harmonic component and the fundamental component in the received tracking signal reach the minimum value, the normal direction of the antenna array is aligned with the target to be tracked.
Fig. 7 shows the ratio of the first harmonic component to the fundamental component in the received tracking signal when the target to be tracked is at different angles with respect to the normal direction of the antenna array. As can be seen from fig. 7, when the signal to be tracked is in the normal direction of the antenna array, the ratio of the first harmonic component to the fundamental component reaches a minimum value. The present embodiment illustrates that the radio signal can be tracked based on the ratio of the first harmonic component to the fundamental component.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (6)
1. The utility model provides a single channel radio tracking system, its characterized in that includes antenna array (1), radio frequency switch module (2), receives radio frequency channel module (3), data acquisition processing control module (4), output display module (5), revolving stage module (6) and servo motor module (7), wherein:
the antenna array (1) is used for receiving a radio signal incident in space;
the radio frequency switch module (2) is used for periodically gating each unit of the antenna array;
the receiving radio frequency channel module (3) performs low-noise amplification, down-conversion and low-pass filtering on the received radio signal to obtain an intermediate frequency signal;
the data acquisition processing control module (4) acquires data of the received intermediate frequency signal, analyzes the data in a digital domain, obtains a radio incidence direction by comparing the relative relation of frequency spectrums of the fundamental frequency component and the first harmonic component, and controls the servo motor module (7);
the output display module (5) controls the periodic opening and closing of the radio frequency switch module (2) through outputting a logic signal;
the rotating platform module (6) displays the obtained radio incidence direction information through the output display module (5);
the servo motor module (7) is used for driving the antenna array (1) so that the normal direction of the antenna array (1) tracks the target direction;
the antenna array (1) is connected with a radio frequency switch module (2), the radio frequency switch module (2) is connected with a receiving radio frequency channel module (3), the receiving radio frequency channel module (3) is connected with a data acquisition and processing control module (4), the data acquisition and processing control module (4) is connected with the radio frequency switch module (2), an output display module (5) and a servo motor module (7), and the servo motor module (7) is connected with a rotating platform module (6);
the data acquisition processing control module (4) controls the radio frequency switch module (2) to periodically switch on the two antenna units (1);
the data acquisition processing control module also comprises a servo motor which is driven to rotate the whole system.
2. A single channel radio tracking system according to claim 1, characterized in that the antenna array (1) is a directional antenna array of two antenna elements.
3. The single-channel radio tracking system according to claim 1, characterized in that the radio frequency switch module (2) is a single-pole double-throw radio frequency switch, or a combination of a power divider and a single-pole single-throw switch.
4. The single-channel radio tracking system of claim 1, wherein the data acquisition processing control module (4) analyzes the frequency spectrum of the received signal, and controls the servo motor module (7) by using the ratio of the first harmonic component to the fundamental component in the received signal as a driving signal, and when the ratio reaches a minimum value, the direction pointed by the antenna array is the direction to be tracked.
5. A single channel radio tracking method of a single channel radio tracking system based on claims 1-4, comprising the steps of:
a receiving step: an antenna array (1) receives spatially incident radio signals;
a gating step: the radio frequency switch module (2) periodically gates each unit of the antenna array;
a signal processing step: the receiving radio frequency channel module (3) performs low-noise amplification, down-conversion and low-pass filtering on the received radio signal to obtain an intermediate frequency signal;
analyzing and judging: the data acquisition processing control module (4) acquires data of the received intermediate frequency signal, analyzes the data in a digital domain, obtains a radio incidence direction by comparing the relative relation of frequency spectrums of the fundamental frequency component and the first harmonic component, and controls the servo motor module (7);
the data acquisition processing control module also comprises a servo motor which is driven to rotate the whole system.
6. The single channel radio tracking method of claim 5, wherein the analyzing and determining step comprises:
and when the ratio of the first harmonic component to the fundamental component is increased, controlling the servo motor module (7) to rotate in the reverse direction, and when the ratio of the first harmonic component to the fundamental component reaches the minimum value, finishing tracking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010120320.6A CN113311382B (en) | 2020-02-26 | 2020-02-26 | Single-channel radio tracking system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010120320.6A CN113311382B (en) | 2020-02-26 | 2020-02-26 | Single-channel radio tracking system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113311382A CN113311382A (en) | 2021-08-27 |
| CN113311382B true CN113311382B (en) | 2023-03-14 |
Family
ID=77370055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010120320.6A Active CN113311382B (en) | 2020-02-26 | 2020-02-26 | Single-channel radio tracking system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113311382B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10163730A (en) * | 1996-11-27 | 1998-06-19 | Murata Mfg Co Ltd | Automatic tracking antenna and tracking method for the same |
| US6574460B1 (en) * | 1999-04-14 | 2003-06-03 | Fuba Automotive Gmbh & Co. Kg | Radiotelephone system for motor vehicles with a group antenna |
| CN103439686A (en) * | 2013-07-25 | 2013-12-11 | 上海交通大学 | Single-channel radio direction finding system |
| CN107861095A (en) * | 2017-10-10 | 2018-03-30 | 上海交通大学 | A kind of single radio-frequency channel two dimensional wireless electricity direction-finding system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7421321B2 (en) * | 1995-06-07 | 2008-09-02 | Automotive Technologies International, Inc. | System for obtaining vehicular information |
| CN105186102B (en) * | 2015-09-15 | 2018-01-19 | 西安星通通信科技有限公司 | Antenna for satellite communication in motion system and tracking based on digital beam tracking |
-
2020
- 2020-02-26 CN CN202010120320.6A patent/CN113311382B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10163730A (en) * | 1996-11-27 | 1998-06-19 | Murata Mfg Co Ltd | Automatic tracking antenna and tracking method for the same |
| US6574460B1 (en) * | 1999-04-14 | 2003-06-03 | Fuba Automotive Gmbh & Co. Kg | Radiotelephone system for motor vehicles with a group antenna |
| CN103439686A (en) * | 2013-07-25 | 2013-12-11 | 上海交通大学 | Single-channel radio direction finding system |
| CN107861095A (en) * | 2017-10-10 | 2018-03-30 | 上海交通大学 | A kind of single radio-frequency channel two dimensional wireless electricity direction-finding system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113311382A (en) | 2021-08-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108414966B (en) | Broadband linear frequency modulation signal direction finding system and method based on time modulation | |
| CN213210458U (en) | Radar target simulation and interference countermeasure training system | |
| CN202003029U (en) | W-wave band front-car anti-collision radar detection system | |
| CN108344982B (en) | Small unmanned aerial vehicle target radar detection method based on long-time coherent accumulation | |
| CN106872967B (en) | Moving target detection system and method based on bistatic radar | |
| CN108828546B (en) | Space-based multi-channel moving target radar receiving and processing system and method | |
| CN111257655B (en) | Intercepted distance testing device for radio frequency sensor | |
| Fang et al. | Radar maneuvering target detection based on two steps scaling and fractional Fourier transform | |
| CN202583456U (en) | Building perspective detection device based on hybrid waveforms | |
| CN104678364A (en) | S-band passive radar interception receiver and signal processing method thereof based on FPGA (Field Programmable Gate Array) | |
| CN108414992B (en) | Target detection method based on phase information clutter map | |
| CN114609593A (en) | Harmonic radar based on FPGA and deep learning | |
| CN113311382B (en) | Single-channel radio tracking system and method | |
| CN101825698A (en) | Scattering measurement system for microwave wideband multi-polarization single parabolic antenna | |
| GB2024547A (en) | Radar receiver | |
| CN109799475A (en) | A kind of wireless direction finding method based on the detection of time-modulation array harmonic energy | |
| CN113960523A (en) | Universal ultra-wideband correction direction-finding method and system based on FPGA | |
| CN202305792U (en) | Three-channel digital tracking receiver | |
| CN106935976B (en) | Mobile satellite communication antenna servo system based on FFT tracking technology | |
| CN105929361A (en) | Single antenna optimization amplitude comparison radio direction finding system and method | |
| CN111948641B (en) | Frequency modulation continuous wave detection system and method based on time modulation technology | |
| CN113567914B (en) | Omnidirectional broadband direction-finding system based on time modulation array | |
| CN105933077A (en) | Multi-channel fluorescence spectrum radio direction finding system and method having optimal amplitude comparison | |
| CN116299151A (en) | Amplitude comparison direction finding equipment and method for static or low-speed unmanned aerial vehicle | |
| CN116224245A (en) | Radar point trace multi-period backtracking clutter suppression method based on two-dimensional speed grid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |