CN112395464A - Electronic information intermediate frequency data processing method based on openmp acceleration - Google Patents
Electronic information intermediate frequency data processing method based on openmp acceleration Download PDFInfo
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- CN112395464A CN112395464A CN202011300272.5A CN202011300272A CN112395464A CN 112395464 A CN112395464 A CN 112395464A CN 202011300272 A CN202011300272 A CN 202011300272A CN 112395464 A CN112395464 A CN 112395464A
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- 238000003672 processing method Methods 0.000 title claims abstract description 12
- 230000001133 acceleration Effects 0.000 title claims abstract description 11
- 238000004422 calculation algorithm Methods 0.000 claims description 7
- 230000002457 bidirectional effect Effects 0.000 claims description 6
- 238000004364 calculation method Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 description 9
- 238000012360 testing method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000010365 information processing Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/90—Details of database functions independent of the retrieved data types
- G06F16/901—Indexing; Data structures therefor; Storage structures
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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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/021—Auxiliary means for detecting or identifying radar signals or the like, e.g. radar jamming signals
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Abstract
The invention discloses an openmp acceleration-based electronic information intermediate frequency data processing method, which comprises the following steps: firstly, analyzing intermediate frequency data in electronic information to obtain pulse data and pulse number; applying for a chain table space, creating a two-way chain table, wherein the number of members is equal to the number of pulses, and storing pulse data into the chain table in sequence; starting N threads based on openmp, and executing signal processing on all pulses in a linked list in parallel, wherein each openmp thread is responsible for processing intermediate frequency pulse data; and finally, after all the pulse data are processed in parallel, traversing the linked list and outputting a data processing result. The invention has the advantages of high processing speed, less time consumption, strong expansibility and easy upgrading.
Description
Technical Field
The invention belongs to the technical field of signal processing, and particularly relates to an openmp acceleration-based electronic information intermediate frequency data processing method.
Background
The electronic information reconnaissance is an important link of modern system combat, acquires information such as functional parameters of a radar by intercepting and processing signals of a radar radiation source, and provides necessary information support for realizing functions such as battlefield situation perception and key target identification. With the continuous development of modern radars from fixed analog systems to digital programmable systems, the signal patterns of the radars are more complex, and an information reconnaissance mode based on intermediate frequency data of a radiation source can provide more comprehensive and accurate radar characteristic parameter information, so that the method becomes an important means for acquiring electronic reconnaissance information.
However, the processing of the radar intermediate frequency data currently faces the following problems:
firstly, the data volume is large, the signal processing calculation amount is large, and the generation of the electronic information has certain timeliness, so the requirement on the calculation speed is higher.
And secondly, with the continuous updating of the radar system, the algorithm of signal processing needs to be optimized and updated synchronously.
In this case, a high-speed electronic reconnaissance intermediate frequency data processing method which is easy to upgrade the algorithm is required.
Disclosure of Invention
The invention aims to provide an electronic information intermediate frequency data processing method which has high processing speed, less time consumption, strong expansibility and easy upgrading.
The technical solution for realizing the purpose of the invention is as follows: an openmp acceleration-based electronic information intermediate frequency data processing method comprises the following steps:
step 1, analyzing intermediate frequency data in electronic information to obtain pulse data and pulse number;
step 2, applying for a linked list space, creating a bidirectional linked list, wherein the number of members is equal to the number of pulses, and storing pulse data into the linked list in sequence;
step 3, starting N threads based on openmp, wherein N is less than or equal to the number of kernel threads of the hardware platform;
step 4, parallelly executing signal processing on all pulses in the linked list, wherein each openmp thread is responsible for processing intermediate frequency pulse data;
and 5, waiting for the completion of parallel processing of all the pulse data, traversing the linked list and outputting a data processing result.
Further, the application of the linked list space in step 2 creates a bidirectional linked list, the number of members is equal to the number of pulses, and the pulse data are stored in the linked list in sequence, which is specifically as follows:
applying for chain table space, creating bidirectional chain table, where the number of members is equal to the number of pulses, and the members of the chain table are pointers, and storing the pulse data in the regions pointed by the pointers of the members of each chain table in sequence.
Further, the step 4 of executing signal processing on all pulses in the linked list in parallel, where each openmp thread is responsible for processing one intermediate frequency pulse data, specifically as follows:
4.1, each openmp thread acquires corresponding pulse data from the linked list through the currently processed pulse serial number;
4.2, calculating the arrival time, the carrier frequency, the pulse width, the modulation type and the modulation parameter of the pulse based on a radar signal processing algorithm;
and 4.3, storing the parameters obtained by calculation in the step 4.2 into the chain table space to which the pulse belongs.
Compared with the prior art, the invention has the following remarkable advantages: (1) according to the characteristics of the intermediate frequency data of the radar, a linked list mode is adopted for storage, and meanwhile, OpenMP threads are deployed at the circulation position for processing pulse data, so that the data processed among different threads are completely independent, and the problem of data conflict in the parallelization process is avoided; (2) the application programming interface Open MP is used for carrying out parallel processing on the electronic information intermediate frequency data, hardware resources are integrated and optimized, the signal processing speed is improved, and the time consumed by electronic information processing is reduced; (3) the method is easy to upgrade the algorithm, and the OpenMP thread is deployed at the cycle of processing the pulse data, so that the signal processing algorithm can be upgraded at any time without influencing the parallelization processing of the system.
Drawings
Fig. 1 is a flow chart of an openmp acceleration-based electronic information intermediate frequency data processing method of the present invention.
FIG. 2 is a schematic diagram of a doubly linked list structure of the present invention.
FIG. 3 is a schematic diagram of the runtime required to process 4MB sized IF data using a conventional serial method according to an embodiment of the present invention.
FIG. 4 is a schematic diagram of the runtime required to process intermediate frequency data of 4MB size according to the present invention.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments.
With reference to fig. 1, the invention relates to an openmp acceleration-based electronic information intermediate frequency data processing method, which comprises the following specific implementation steps:
step 1, analyzing intermediate frequency data in electronic information to obtain pulse data and pulse number, wherein a common intermediate frequency data file can be stored according to a specified format, and the pulse data and the pulse number can be directly read from the file.
Step 2, applying for the linked list space, creating a bidirectional linked list, wherein the number of members is equal to the number of pulses, the members of the linked list are pointers, and the pulse data are sequentially stored in the areas pointed by the member pointers of each linked list, as shown in fig. 2.
According to the implementation mode of the chain table in the memory shown in fig. 2, the pulse data is stored in the chain table mode, each thread can quickly access the data through the chain table index, the data processed among different threads are completely independent, and the problem of data collision in the parallelization process is solved.
And 3, starting N threads based on openmp, wherein N is less than or equal to the number of kernel threads of the hardware platform.
Step 4, executing signal processing on all pulses in the linked list in parallel, wherein each openmp thread is responsible for processing intermediate frequency pulse data, as shown in fig. 1, the method specifically comprises the following steps for signal processing of the pulses;
step 4.1, each openmp thread acquires pulse data to be processed through a linked list index corresponding to the currently processed serial number;
4.2, processing the current pulse data by using a radar signal processing algorithm, and calculating the arrival time, carrier frequency, pulse width, modulation type and parameters of the pulse;
and 4.3, storing the parameters obtained by calculation in the step 4.2 in a data space pointed by the pulse linked list, namely in the data space pointed by the linked list applied in the step 2.
And 5, traversing the linked list after the data processing of all the pulses is finished, and outputting the processing results of all the pulses.
The invention is described in further detail below with reference to the figures and the embodiments.
Example 1
1. And (3) testing conditions are as follows:
the test adopts radar intermediate frequency data with the size of 4MB, the data sampling rate is set to be 1000MHz, the pulse width is set to be 1 mus, and no modulation exists in the pulse.
Hardware platform: the commercial computer and the CPU are Intel core i7-4700EQ and the main frequency is 2.4 GHz; operating the system: windows 7; developing a tool: Labwindows/CVI 2013.
2. Simulation content:
test 1: under the above test conditions, the intermediate frequency data file of 4MB was serially processed 10 times, and the time consumed for each data processing is shown in fig. 3.
And (3) testing 2: under the test conditions, the signal processing flow is accelerated in parallel by using the method, wherein 8 threads are started by using Openmp, the running is performed for 10 times, and the time consumed by finishing all data processing after finishing data processing each time is shown in fig. 4.
3. Simulation analysis:
comparing fig. 3 and fig. 4, it can be seen that, when the present invention is used to perform parallel acceleration on the intermediate data processing, the efficiency of the whole signal processing is improved by nearly three times, the speed of the signal processing is improved, and the time consumed by the electronic information processing is reduced.
Claims (3)
1. An openmp acceleration-based electronic information intermediate frequency data processing method is characterized by comprising the following steps:
step 1, analyzing intermediate frequency data in electronic information to obtain pulse data and pulse number;
step 2, applying for a linked list space, creating a bidirectional linked list, wherein the number of members is equal to the number of pulses, and storing pulse data into the linked list in sequence;
step 3, starting N threads based on openmp, wherein N is less than or equal to the number of kernel threads of the hardware platform;
step 4, parallelly executing signal processing on all pulses in the linked list, wherein each openmp thread is responsible for processing intermediate frequency pulse data;
and 5, waiting for the completion of parallel processing of all the pulse data, traversing the linked list and outputting a data processing result.
2. The openmp acceleration-based electronic information intermediate frequency data processing method as claimed in claim 1, wherein the application linked list space in step 2 creates a bi-directional linked list, the number of members is equal to the number of pulses, and the pulse data are stored in the linked list in sequence as follows:
applying for chain table space, creating bidirectional chain table, where the number of members is equal to the number of pulses, and the members of the chain table are pointers, and storing the pulse data in the regions pointed by the pointers of the members of each chain table in sequence.
3. The openmp acceleration-based electronic intelligence intermediate frequency data processing method as claimed in claim 1, wherein the signal processing for all pulses in the chain table is performed in parallel in step 4, wherein each openmp thread is responsible for processing one intermediate frequency pulse data, specifically as follows:
4.1, each openmp thread acquires corresponding pulse data from the linked list through the currently processed pulse serial number;
4.2, calculating the arrival time, the carrier frequency, the pulse width, the modulation type and the modulation parameter of the pulse based on a radar signal processing algorithm;
and 4.3, storing the parameters obtained by calculation in the step 4.2 into the chain table space to which the pulse belongs.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008139056A (en) * | 2006-11-30 | 2008-06-19 | Mitsubishi Electric Corp | Radar signal identifier |
| CN104184687A (en) * | 2013-05-23 | 2014-12-03 | 北京信威通信技术股份有限公司 | Flow control method and hardware accelerator circuit of communication base-band processing |
| CN104424123A (en) * | 2013-09-10 | 2015-03-18 | 中国石油化工股份有限公司 | Lock-free data buffer and usage thereof |
| CN104849698A (en) * | 2015-05-21 | 2015-08-19 | 中国人民解放军海军工程大学 | Radar signal parallel processing method and system based on heterogeneous multinucleated system |
| CN107330945A (en) * | 2017-07-05 | 2017-11-07 | 合肥工业大学 | A kind of examing heartbeat fastly method based on video |
-
2020
- 2020-11-18 CN CN202011300272.5A patent/CN112395464A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008139056A (en) * | 2006-11-30 | 2008-06-19 | Mitsubishi Electric Corp | Radar signal identifier |
| CN104184687A (en) * | 2013-05-23 | 2014-12-03 | 北京信威通信技术股份有限公司 | Flow control method and hardware accelerator circuit of communication base-band processing |
| CN104424123A (en) * | 2013-09-10 | 2015-03-18 | 中国石油化工股份有限公司 | Lock-free data buffer and usage thereof |
| CN104849698A (en) * | 2015-05-21 | 2015-08-19 | 中国人民解放军海军工程大学 | Radar signal parallel processing method and system based on heterogeneous multinucleated system |
| CN107330945A (en) * | 2017-07-05 | 2017-11-07 | 合肥工业大学 | A kind of examing heartbeat fastly method based on video |
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| 陈向群: "数据结构", 人民邮电出版社, pages: 25 - 29 * |
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