CN102193086B - Device and method for processing integrated data of synthetic aperture radar system - Google Patents
Device and method for processing integrated data of synthetic aperture radar system Download PDFInfo
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Abstract
The invention discloses an integrated technology for realizing the monitoring, control and real-time imaging processing of a multifunctional high-precision synthetic aperture radar system and an implementation method thereof. The technology disclosed by the invention can be applied to the processing and control of comprehensive data of the multifunctional high-precision synthetic aperture radar, namely, state information, parameters and data of various units of the radar system, including system working parameters, inertia, GPS (Global Positioning System) measurement data, radar echo data and the like, are acquired the acquired data information is subjected to integrated processing in accordance with the working mode of the system, and SAR (Synthetic Aperture Radar) real-time images and relevant processing results are generated while the processing results are utilized to perform optimized control and management on the system, thereby stable and reliable working of the high-precision multifunctional synthetic aperture radar is ensured.
Description
Technical field
The invention belongs to the control of synthetic-aperture radar (SAR) system and technical field of data processing, relate in particular to a kind of the realization whole states, information and the data of high-accuracy multifunctional synthetic-aperture radar are carried out the integral collecting processing, Real-time Obtaining high-resolution radar image, and Technologies Against Synthetic Aperture Radar control effectively and manages.
Background technology
Synthetic-aperture radar (SAR) is a kind of high-resolution microwave imaging radar, can carry out on a surface target high-resolution detection, and has advantage round-the-clock, round-the-clock.From eighties of last century the fifties, since the aperture synthetic method occurs, the SAR system has been loaded in the detection that is used on the flying platforms such as aircraft, satellite, unmanned plane on a surface target in a large number, is widely used in fields such as geographical resource investigation, crops monitoring, marine monitoring, military surveillances.
Along with the continuous lifting of SAR technical feature, the complexity of SAR system constantly increases, and a cover high-accuracy multifunctional SAR system has the functions such as band imaging, spotlight imaging, scanning imagery, interference imaging, complete polarization imaging and ground moving object detection concurrently.Different imaging mode of operations is all different to parameter setting, data acquisition, system's control and the imaging processing of radar system.From system, use angle, the work such as system monitoring, control and data processing under the consideration difference in functionality pattern that can not be discrete.
The high-accuracy multifunctional synthetic-aperture radar need to be processed the control of above-mentioned difference in functionality pattern and effectively integrate, and reduces system monitoring, control and data processing to redundance and the complexity requirement of system hardware resources and corresponding control process software.
Summary of the invention
The object of the present invention is to provide a kind of high-accuracy multifunctional polarization sensitive synthetic aperture radar system integration data treating apparatus.
Another purpose of the present invention is to provide a kind of and utilizes above-mentioned polarization sensitive synthetic aperture radar system integration data treating apparatus to realize that data are processed and the method for control, state parameter, steering order, navigation information and echo datas etc. to the outside input of radar system carry out integral collecting, process and corresponding control and management, realize the effective reliably working under different mode of high-accuracy multifunctional polarization sensitive synthetic aperture radar system.
For achieving the above object, polarization sensitive synthetic aperture radar system integration data treating apparatus provided by the invention mainly comprises:
Radar information and data integrated collecting unit are for status information, posture position metrical information and the radar return data of integrated reception and each extension set of collection radar system;
The motion compensation calculations unit receives and integrates processing from the radar system position and attitude measurement parameter of radar information and data integrated collecting unit, calculates the parameter for motion compensation and system's control;
The real time imagery processing unit receives and processes the radar return data that gather from radar information and data integrated collecting unit, and in conjunction with the motion compensation parameters that the motion compensation calculations unit is sent, eliminates kinematic error to the impact of image quality;
System monitoring, control and administrative unit, receive and according to system status parameters and the steering order sent from radar information and data integrated collecting unit, the radar system duty is detected, and carry out steering order control radar system works under corresponding pattern; Simultaneously system model and parameter are issued the real time imagery processing unit.
Described polarization sensitive synthetic aperture radar system integration data treating apparatus, wherein, the radar system position and attitude measurement parameter of radar information and data integrated collecting unit comprises the radar system position and attitude measurement parameter of IMU, GPS and Gimbals.
The method of utilizing above-mentioned polarization sensitive synthetic aperture radar system integration data treating apparatus to realize data processing and control provided by the invention, all external informations that radar is obtained, state and data are carried out integral collecting, collection result is through motion compensation units, real time imagery processing unit and system monitoring, the processing of control and processing unit, form different data messages, comprise moving compensating data, realtime image data and control and management information, above-mentioned information completely contained the radar duty, steering order and image information have realized relevant information and data integrated processing and integrated control and management to the high-accuracy multifunctional polarization sensitive synthetic aperture radar system.
Can find out that from technique scheme the present invention has following beneficial effect:
Utilize the present invention, can take full advantage of can expand, modular hardware handles resource, realization is to integral collecting, processing and the control output of the whole useful informations of the synthetic-aperture radar of different working modes and data, effectively reduction system multi-operation mode is processed and the complexity requirement of controlling data, improves radar system functional reliability and stability.
Description of drawings
Fig. 1 is the synoptic diagram of realization high-accuracy multifunctional polarization sensitive synthetic aperture radar system integrated data acquisition provided by the invention, processing and control and management.
Fig. 2 is the corresponding composition of specific embodiment provided by the invention and annexation synoptic diagram.
Fig. 3 is the detailed realization synoptic diagram that data and signal are processed in the specific embodiment provided by the invention.
Embodiment
The invention provides a kind of realization high-accuracy multifunctional polarization sensitive synthetic aperture radar system integration data and process and the control and management technology, this technology adopts integrated data acquisition and computing hardware platform, mainly comprises:
Information and date integral collecting unit is for status information, posture position metrical information and the radar return data of integrated reception and each extension set of collection radar system;
The motion compensation calculations unit is used for integrating the radar system position and attitude measurement parameter of processing from IMU, GPS and Gimbals, calculates the parameter for motion compensation and system's control;
The real time imagery processing unit for the treatment of the radar return data that collect, and in conjunction with motion compensation parameters, is eliminated kinematic error to the impact of image quality;
System monitoring, control and administrative unit are used for the radar system duty being detected, and carrying out corresponding steering order according to the status information and the external control information that gather, and the control radar system works is under corresponding pattern.
The different processing units of above-mentioned platform adopts extendible unified shader high-performance hardware resource to realize, for different pieces of information treatment scale and radar system control complexity, adjusts by the modularization expansion of hardware resource, can realize integrated design.
For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail.
As shown in Figure 1, Fig. 1 is the structural representation of high-accuracy multifunctional polarization sensitive synthetic aperture radar system integrated data acquisition provided by the invention, processing and control and management.Fig. 2 is an embodiment of the given basic synoptic diagram of Fig. 1.
Polarization sensitive synthetic aperture radar system work will be under selected mode of operation, carries out transmitting-receiving, the acquisition and processing of signal according to system configuration parameter, and this also is the groundwork flow process of radar system.For guaranteeing the correct reliably imaging work of radar, need a large amount of outer secondary supplementary informations and data to participate in system works.These data comprise attitude, the location measurement information that the aircraft inertial navigation provides, the antenna stabilized platform control extensions provides the antenna attitude metrical information, the external control instruction that the aircraft bus provides, the status informations of the extension sets such as high power transmitter, low power analog and receiver unit etc., extension set state acquisition module is mainly finished reception and the collection of above-mentioned information and instruction.The A/D cache module is mainly finished the high-speed digitization collection of radar echo signal.Auxiliary data forms module and then digitizing echoed signal and information, instruction acquisition signal is obtained fused data, forms the information of total digitalization, uniform format, is convenient to the realization that follow-up signal is processed.
Radar information and data integrated collecting unit are passed to external control instruction, system health information and aspect, positional information and adopt the monitoring of built-in PC designed system, control and administrative unit by data transmission bus, finish the Real-Time Monitoring of radar extension set duty.Simultaneously, system is controlled on the basis of finishing each extension set job control, need to carry out accurate control and compensation to the sensing of antenna beam according to motion compensation parameters and system works pattern, to satisfy the mode of operations such as pack, scanning to the requirement of controlling antenna wave beam to point.Eliminate simultaneously because carrier aircraft is moved to the disturbance of antenna beam.
Motion compensation calculations unit and real time imagery processing unit all adopt the unified realization of the processing module of TS101 high-performance digital signal processor design, as shown in Figure 3.The real time imagery processing unit then utilizes fused data, employing is calculated in conjunction with the two dimensional compaction imaging processing of motion compensation, realize the imaging processing of radar return image data, through after the image Compression, radar image is passed to the external transmission that data transmission interface is realized the radar image that obtains.And TS101 high performance digital signal processing module is a kind of processing unit that can carry out the software configuration, by configuration different disposal software, make system's acquisition such as the signal handling capacity of the different modes such as ground moving object detection, realize integrated data processing function.
Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. polarization sensitive synthetic aperture radar system integration data treating apparatus mainly comprises:
Radar information and data integrated collecting unit are used for state parameter, position and attitude measurement parameter, radar return data and the external control instruction of integrated reception and each extension set of collection radar system;
The motion compensation calculations unit receives and integrates processing from the radar system position and attitude measurement parameter of radar information and data integrated collecting unit, calculates the parameter for motion compensation;
The real time imagery processing unit, receive and process the radar return data that gather from radar information and data integrated collecting unit, and the motion compensation parameters of sending in conjunction with the motion compensation calculations unit and system monitoring, control and administrative unit system model and the parameter sent, eliminate kinematic error to the impact of image quality;
System monitoring, control and administrative unit, receive and according to system status parameters and the steering order sent from radar information and data integrated collecting unit, the radar system duty is monitored, and carry out steering order control radar system works under corresponding pattern; Simultaneously system model and parameter are issued the real time imagery processing unit.
2. polarization sensitive synthetic aperture radar system integration data treating apparatus according to claim 1, wherein, the radar system position and attitude measurement parameter of radar information and data integrated collecting unit comprises the radar system position and attitude measurement parameter from IMU, GPS and Gimbals.
3. one kind is utilized the described polarization sensitive synthetic aperture radar system integration data of claim 1 treating apparatus to realize that data are processed and the method for control, all external informations that radar system is obtained, state and data are carried out integral collecting, collection result is through the motion compensation calculations unit, real time imagery processing unit and system monitoring, the processing of control and administrative unit, form different data messages, comprise moving compensating data, realtime image data and control and management information, described data message is complete has contained the radar system duty, steering order and image information have realized relevant information and data integrated processing and integrated control and management to the high-accuracy multifunctional polarization sensitive synthetic aperture radar system.
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| CN 201110032558 CN102193086B (en) | 2010-02-09 | 2011-01-27 | Device and method for processing integrated data of synthetic aperture radar system |
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| CN201010614332.0 | 2010-12-30 | ||
| CN 201110032558 CN102193086B (en) | 2010-02-09 | 2011-01-27 | Device and method for processing integrated data of synthetic aperture radar system |
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| CN102628933B (en) * | 2012-04-26 | 2013-07-17 | 中国科学院东北地理与农业生态研究所 | Data processing and imaging method for multi-frequency microwave radiometer |
| CN103197285B (en) * | 2013-03-22 | 2014-08-13 | 电子科技大学 | Navigation data fitting method used for synthetic aperture radar imaging |
| CN103207385B (en) * | 2013-04-12 | 2014-12-24 | 中国科学院电子学研究所 | High resolution and wide swath airborne synthetic aperture radar (SAR) real-time imaging processing system based on graphics processing unit (GPU) |
| CN105929400B (en) * | 2016-05-25 | 2018-10-16 | 中国科学院遥感与数字地球研究所 | Based on change speed of a ship or plane carried SAR compensation data method under the constant PRF accurately measured |
| CN110018459B (en) * | 2019-04-11 | 2023-06-09 | 上海卫星工程研究所 | Method for designing analysis flow of satellite-borne SAR echo auxiliary data |
| CN113759376B (en) * | 2021-09-22 | 2023-09-19 | 上海无线电设备研究所 | Autonomous detection imaging integrated radar device |
| CN113655481B (en) * | 2021-09-27 | 2023-11-24 | 水利部南京水利水文自动化研究所 | InSAR deformation monitoring precision improving and checking method and system |
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| CN1811486A (en) * | 2005-01-25 | 2006-08-02 | 中国科学院电子学研究所 | Airborne interference SAR system and method based on POS |
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Non-Patent Citations (2)
| Title |
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| Xupu Geng et al.."A Two-Dimensional Spectrum Model for General Bistatic SAR".《IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING》.2008,第46卷(第8期),第2216-2223页. |
| 郭智 等."一种高分辨率机载SAR实时数据处理系统设计".《电子与信息学报》.2004,第26卷(第7期),第1120-1125页. |
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