CN109061552B - Novel rapid multi-ring radio signal direction finding algorithm - Google Patents
Novel rapid multi-ring radio signal direction finding algorithm Download PDFInfo
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- CN109061552B CN109061552B CN201810444538.XA CN201810444538A CN109061552B CN 109061552 B CN109061552 B CN 109061552B CN 201810444538 A CN201810444538 A CN 201810444538A CN 109061552 B CN109061552 B CN 109061552B
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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
- 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
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- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The application relates to a multi-ring radio signal direction finding algorithm, which comprises the following steps: firstly, collecting a sample value; the second step, using the rough capturing ring to conduct direction finding to obtain a first radio azimuth, and interpolating the first radio azimuth to obtain a second radio azimuth; thirdly, the second radio azimuth is subjected to direction finding by using a fine catch ring to obtain a third radio azimuth, and the third radio azimuth is interpolated to obtain a fourth radio azimuth; and fourthly, using a fine-catching ring to measure the direction of the fourth radio azimuth to obtain a fifth radio azimuth, wherein the fifth radio azimuth is the current radio signal direction. The application can realize a multi-ring radio signal direction finding algorithm.
Description
Technical Field
The application relates to the field of radio direction finding, in particular to a multi-ring radio signal direction finding algorithm.
Background
When the correlation interferometer theory is used for direction finding, a correlation algorithm is carried out according to the phase difference measured currently and the sample to obtain the most relevant direction, namely the incoming wave direction, so that the sample for carrying out the correlation algorithm is required to be as fine as possible, and the direction stepping of the sample determines the accuracy of the incoming wave direction measured by the system. Taking the index requirement of 1 degree as an example: this results from the correlation of the current phase difference with each degree of phase difference in 360 ° in the sample. There are two ways to implement this operation: first, if a serial structure is adopted, a lot of time is spent, the direction finding result loses effectiveness, and second, if a parallel structure is adopted, a lot of hardware resources are spent.
Disclosure of Invention
In order to solve the above problems, the present application provides a multi-ring radio signal direction finding algorithm based on the above problems, wherein the algorithm comprises the following steps:
firstly, collecting a sample value;
the second step, using the rough capturing ring to conduct direction finding to obtain a first radio azimuth, and interpolating the first radio azimuth to obtain a second radio azimuth;
thirdly, the second radio azimuth is subjected to direction finding by using a fine catch ring to obtain a third radio azimuth, and the third radio azimuth is interpolated to obtain a fourth radio azimuth;
and fourthly, using a fine-catching ring to measure the direction of the fourth radio azimuth to obtain a fifth radio azimuth, wherein the fifth radio azimuth is the current radio signal direction.
Further, the sample value of the first step is obtained by stepping to 10 degrees in the range of 0-360 degrees on the horizontal plane.
Further, the coarse capturing ring, the fine capturing ring and the fine capturing ring are application programs with different measurement precision written in C language, the precision of the coarse capturing ring is 10 degrees, the precision of the fine capturing ring is 5 degrees, and the precision of the fine capturing ring is 0.625 degrees.
Further, in the second step, the first radio azimuth is interpolated, and three azimuth points, namely, the first radio azimuth and a sample value of plus or minus 10 degrees of the horizontal plane of the first radio azimuth are taken for interpolation, wherein the interpolation precision is 5 degrees.
Further, in the third step, the third radio azimuth is interpolated, and the interpolation is performed by taking three azimuth points of the third radio azimuth and the sample value of plus or minus 5 ° of the horizontal plane of the third radio azimuth, wherein the interpolation precision is 0.625 °.
The aim of the application is realized by the technical scheme: a multi-loop radio signal direction finding algorithm.
The application has the following advantages:
1. the direction finding result has effectiveness.
2. Less hardware resources are spent.
Drawings
Fig. 1 is a flow chart of a multi-loop radio signal direction finding algorithm.
Detailed Description
The present application will be further described with reference to the accompanying drawings, but the scope of the present application is not limited to the following.
As shown in fig. 1, a multi-loop radio signal direction finding algorithm is characterized in that the algorithm comprises the following steps:
firstly, collecting a sample value;
the second step, using the rough capturing ring to conduct direction finding to obtain a first radio azimuth, and interpolating the first radio azimuth to obtain a second radio azimuth;
thirdly, the second radio azimuth is subjected to direction finding by using a fine catch ring to obtain a third radio azimuth, and the third radio azimuth is interpolated to obtain a fourth radio azimuth;
and fourthly, using a fine-catching ring to measure the direction of the fourth radio azimuth to obtain a fifth radio azimuth, wherein the fifth radio azimuth is the current radio signal direction.
Further, the sample value of the first step is obtained by stepping to 10 degrees in the range of 0-360 degrees on the horizontal plane.
Further, the coarse capturing ring, the fine capturing ring and the fine capturing ring are application programs with different measurement precision written in C language, the precision of the coarse capturing ring is 10 degrees, the precision of the fine capturing ring is 5 degrees, and the precision of the fine capturing ring is 0.625 degrees.
Further, in the second step, the first radio azimuth is interpolated, and three azimuth points, i.e. the first radio azimuth and the positive and negative 10 ° sample values of the horizontal plane of the first radio azimuth are taken for interpolation, wherein the interpolation precision is 5 °, for example: the current azimuth value is 20 degrees, the positive and negative 10 degrees of the current azimuth are 10 degrees and 30 degrees, interpolation is carried out between 10 degrees, 20 degrees and 30 degrees, and the angles after interpolation are 10 degrees, 15 degrees, 20 degrees, 25 degrees and 30 degrees.
Further, in the third step, the third radio azimuth is interpolated, and the interpolation is performed by taking three azimuth points, namely, the third radio azimuth and a sample value of plus or minus 5 ° of the horizontal plane of the third radio azimuth, wherein the interpolation precision is 0.625 °, for example: the current azimuth value is 25 °, positive and negative 5 ° of the current azimuth are 20 ° and 30 °, interpolation is performed between 20 °, 25 °, 30 °, and angles after interpolation are 20.625 °, 21.25 °, 21.875 °, 22.5 °, 23.125 °, 23.75 °, 24.375 °, 25 °, 25.625 °, 26.25 °, 26.875 °, 27.5 °, 28.125 °, 28.75 °, 29.375 °, 30 °.
It should be noted that, for simplicity of description, the foregoing method embodiments are all expressed as a series of action combinations, but it should be understood by those skilled in the art that the present application is not limited by the order of action described, as some steps may be performed in other order or simultaneously according to the present application. Further, it should be understood by those skilled in the art that the embodiments described in the specification are all preferred embodiments, and the acts and elements referred to are not necessarily required for the present application.
In the foregoing embodiments, the descriptions of the embodiments are focused on, and for those portions of one embodiment that are not described in detail, reference may be made to the related descriptions of other embodiments.
Those skilled in the art will appreciate that implementing all or part of the above-described methods in the embodiments may be accomplished by computer programs stored in a computer-readable storage medium, which when executed, may include the steps of the embodiments of the methods described above. Wherein the storage medium may be a magnetic disk, an optical disk, a ROM, a RAM, etc.
The foregoing disclosure is illustrative of the present application and is not to be construed as limiting the scope of the application, which is defined by the appended claims.
Claims (1)
1. A multi-loop radio signal direction finding algorithm, said algorithm comprising the steps of:
step one, acquiring a sample value in a range of 0-360 degrees from a horizontal plane in a stepping way of 10 degrees;
the second step, using a rough capturing ring to conduct direction finding to obtain a first radio azimuth, interpolating the first radio azimuth to obtain a second radio azimuth, interpolating the first radio azimuth, interpolating three square points of the first radio azimuth and a sample value of plus or minus 10 degrees of a horizontal plane of the first radio azimuth, wherein interpolation accuracy is 5 degrees;
thirdly, using a fine catch ring to measure the direction of the second radio azimuth to obtain a third radio azimuth, interpolating the third radio azimuth to obtain a fourth radio azimuth, interpolating the third radio azimuth, interpolating three azimuth points of the third radio azimuth and a sample value of plus or minus 5 degrees of the horizontal plane of the third radio azimuth, wherein the interpolation precision is 0.625 degrees;
a fourth step of using a fine-catching ring to measure the direction of the fourth radio azimuth to obtain a fifth radio azimuth, wherein the fifth radio azimuth is the current radio signal direction;
the rough capturing ring, the fine capturing ring and the fine capturing ring are application programs with different measurement precision written in C language, the precision of the rough capturing ring is 10 degrees, the precision of the fine capturing ring is 5 degrees, and the precision of the fine capturing ring is 0.625 degrees.
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| CN201810444538.XA CN109061552B (en) | 2018-05-10 | 2018-05-10 | Novel rapid multi-ring radio signal direction finding algorithm |
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| CN201810444538.XA CN109061552B (en) | 2018-05-10 | 2018-05-10 | Novel rapid multi-ring radio signal direction finding algorithm |
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| CN109061552A CN109061552A (en) | 2018-12-21 |
| CN109061552B true CN109061552B (en) | 2023-09-19 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101470187A (en) * | 2007-12-26 | 2009-07-01 | 中国科学院声学研究所 | High-precision direction finding method used for linear array |
| CN102175988A (en) * | 2011-01-21 | 2011-09-07 | 电子科技大学 | Direction finding method of correlative interferometer based on dimension division |
| CN105676171A (en) * | 2016-01-04 | 2016-06-15 | 国家无线电监测中心 | Single channel dual base station ultra-short wave signal spatial positioning method |
| CN205880195U (en) * | 2016-07-22 | 2017-01-11 | 成都国蓉科技有限公司 | Radio direction finding system |
-
2018
- 2018-05-10 CN CN201810444538.XA patent/CN109061552B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101470187A (en) * | 2007-12-26 | 2009-07-01 | 中国科学院声学研究所 | High-precision direction finding method used for linear array |
| CN102175988A (en) * | 2011-01-21 | 2011-09-07 | 电子科技大学 | Direction finding method of correlative interferometer based on dimension division |
| CN105676171A (en) * | 2016-01-04 | 2016-06-15 | 国家无线电监测中心 | Single channel dual base station ultra-short wave signal spatial positioning method |
| CN205880195U (en) * | 2016-07-22 | 2017-01-11 | 成都国蓉科技有限公司 | Radio direction finding system |
Non-Patent Citations (2)
| Title |
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| 《基于阵列合成的相关干涉仪测向算法的实现》;李华会;《，中国优秀博硕士学位论文全文数据库(硕士)信息科技辑》;20180415;正文第12-40页 * |
| 信号源测向与定位研究;谢浩;《中国优秀博硕士学位论文全文数据库(硕士)信息科技辑》;20180215(第02期);摘要，第二章 * |
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