CN-121980739-A - Real-time simulation resolving system for complex electromagnetic environment

CN121980739ACN 121980739 ACN121980739 ACN 121980739ACN-121980739-A

Abstract

The invention discloses a real-time simulation resolving system for a complex electromagnetic environment. The system adopts a heterogeneous architecture combining radio frequency scene real-time resolving software and a hardware acceleration unit. The system comprises a high-performance computing processing platform, radio frequency scene real-time resolving software and a hardware accelerating unit. The hardware acceleration unit is dedicated to pulse level calculation, generates and modulates a multi-path radiation source pulse sequence in real time according to the signal template and the scene characteristic parameters, and finally outputs high-density staggered pulse streams through a high-speed optical fiber interface after interleaving and sequencing. The invention effectively solves the problems of poor real-time performance and low fidelity of the traditional scheme by the beat-pulse two-stage calculation model, can support the real-time calculation of the environment pulse density of not less than 100 ten thousand pulses/second, and meets the high-precision and real-time test and verification requirements of electronic information equipment in complex and changeable electromagnetic environments.

Inventors

LI ZHIPING
ZHOU YUCHEN
LIU JUN

Assignees

杭州电子科技大学

Dates

Publication Date: 20260505
Application Date: 20251208

Claims (7)

1. The real-time simulation resolving system of the complex electromagnetic environment is characterized by comprising a high-performance computing processing platform, a PCI-E hardware accelerating unit, radio frequency scene real-time resolving software and a rapid resolving algorithm, wherein the high-performance computing processing platform is used for running the radio frequency scene real-time resolving software, the PCI-E hardware accelerating unit is connected to the high-performance computing processing platform in a plugging mode and is used for carrying out data interaction with the radio frequency scene real-time resolving software, the radio frequency scene real-time resolving software is configured to execute beat level computation, the PCI-E hardware accelerating unit is configured to execute pulse level computation, and scene characteristic values are processed by using the rapid resolving algorithm.
2. The system of claim 1, wherein the execution flow of the real-time rf scene calculation software includes: the method comprises the steps of initializing, completing software starting initialization by radio frequency scene real-time resolving software, completing logic loading and power-on reset by a PCI-E hardware accelerating unit, and completing self-checking of equipment; The method comprises the steps of running a preparation stage, completing copying and loading of external data files such as scene planning files, platform description files, signal waveform files and the like by radio frequency scene real-time resolving software, acquiring radiation source quantity information from the scene planning files, acquiring radiation source antenna installation parameters, antenna patterns and antenna scanning pattern parameter information from the platform description files, acquiring signal description parameter information from the signal waveform files, calculating and generating a signal template according to the description information, and transmitting the generated signal template to a hardware acceleration unit through a bus by the radio frequency scene real-time resolving software under the triggering of a system pre-positioning instruction, wherein the hardware acceleration unit caches the received signal template according to a designated storage area; Calculating scene characteristic values of each radiation source platform relative to a receiver platform according to respective position, speed and posture information of the radiation source and the receiver carried in the information after the radio frequency scene real-time resolving software receives the platform motion information, and issuing the information to a hardware accelerating unit; the method comprises the steps of calculating scene modulation values, carrying out scene modulation on a generated pulse sequence after receiving the scene characteristic values by a hardware acceleration unit, correcting parameter fields of arrival time, arrival azimuth angle, arrival pitch angle, signal frequency and signal amplitude in each pulse description word one by one, carrying out interleaving sequencing on multiple paths of parallel radiation source pulse sequences according to the arrival time sequence to generate an interleaving pulse sequence, and finally outputting the generated interleaving pulse sequence to the outside through a high-speed optical fiber interface.
3. The system of claim 1, wherein the architecture of the real-time resolution software of the radio frequency scene comprises an application management interface module, a file management module, a flow management module, a resolution management module and a log management module.
4. The system of claim 1, wherein the fast-solving algorithm comprises performing the conversion from scene eigenvalues to scene modulation values by performing high-speed parallel addition multiplication operations on a hardware acceleration unit, the system supporting an ambient pulse density real-time solvency of not less than 100 kilopulses/second.
5. The system of claim 1, wherein the system simulates a beat of 50 milliseconds or less.
6. The system of claim 2, wherein the scene computation phase includes computing scene characteristic parameters based on the platform motion message, including a distance, azimuth angle, pitch angle, radial velocity, transverse velocity, pitch velocity, antenna azimuth radiation angle, antenna elevation radiation angle, and radiation angle of the radiation source platform relative to the receiver platform.
7. The system of claim 2, wherein the pulse-by-pulse scene modulation of pulse sequences by the PCI-E hardware acceleration unit includes parameter correction based on the following algorithm: Calculating the arrival time, and calculating based on the pulse repetition interval, the target distance and the light speed; Calculating an arrival azimuth, and calculating based on the target azimuth, the transverse cutting speed, the pulse repetition interval and the beat starting moment; calculating an arrival pitch angle, and calculating based on the target pitch, the pitch speed, the pulse repetition interval and the beat starting time; calculating signal frequency, and calculating based on the emission frequency, radial speed and light speed; signal amplitude calculations are based on transmit power, transmit frequency, antenna gain, spatial propagation attenuation, and polarization mismatch attenuation.

Description

Real-time simulation resolving system for complex electromagnetic environment Technical Field The invention belongs to the technical field of radio frequency simulation, and relates to a real-time simulation and calculation system for a complex electromagnetic environment. Background With the rapid development of electronic information technology, as the electromagnetic space of information carriers and media, the environmental complexity of the electromagnetic space has become a key factor affecting the performance of electronic information equipment. The complex electromagnetic environment mainly has the following remarkable characteristics that various kinds of frequency-using equipment such as radiation sources, communication, navigation, reconnaissance and passive sensing equipment which are input by two parties are various in variety, different in system, high in transmitting power and dense in distribution. The devices work simultaneously in a narrow space, electromagnetic radiation generated by the devices is highly overlapped, interweaved and mutually disturbed in time domain, frequency domain and space domain, so that the electromagnetic signal flow density at a specific space point is rapidly increased, an abnormally crowded and intricate composite electromagnetic environment is formed, and the pulse density of millions of per second can be achieved. Such high density, multi-regime signal environments present a limiting challenge to the signal detection, sorting, and identification capabilities of electronic information equipment. The traditional radio frequency simulation system adopts an offline resolving and post playback working mode, is difficult to simulate a dynamic countermeasure scene, is limited by a computing architecture, has inherent defects of poor real-time performance, low fidelity, insufficient channel capacity and the like when simulating a high-density and fast-change signal environment, and cannot meet the high real-time application requirements of 'people in a loop', 'equipment in a loop'. Therefore, there is a strong need in the art to develop a new electromagnetic environment simulation and solution technology. The technical core is to develop a high-performance real-time resolving unit which must have the key capabilities of firstly meeting the capability of resolving the radio frequency parameters of 100 ten thousand pulses/second and above so as to meet the characteristics of complex and dense electromagnetic environment and secondly achieving the real-time resolving of pulse by pulse so as to meet the characteristics of rapid and changeable electromagnetic environment. At present, a real-time resolving unit technical scheme based on a heterogeneous computing architecture and fused with a high-efficiency resolving algorithm has the capability of breaking through the bottleneck of the prior art and meeting the requirements of future equipment development and testing. Disclosure of Invention The invention provides a real-time simulation and calculation system for a complex electromagnetic environment in order to overcome the defects of the prior art. In order to achieve the above purpose, the present invention adopts the following technical scheme: The real-time simulation resolving system of the complex electromagnetic environment comprises a high-performance computing processing platform, a PCI-E hardware accelerating unit, radio frequency scene real-time resolving software and a rapid resolving algorithm, wherein the high-performance computing processing platform is used for running the radio frequency scene real-time resolving software, the PCI-E hardware accelerating unit is connected to the high-performance computing processing platform in a plugging mode and performs data interaction with the radio frequency scene real-time resolving software, the radio frequency scene real-time resolving software is configured to execute beat level computation, the PCI-E hardware accelerating unit is configured to execute pulse level computation, and scene characteristic values are processed by using the rapid resolving algorithm. Further, the executing flow of the real-time resolving software of the radio frequency scene comprises: the method comprises the steps of initializing, completing software starting initialization by radio frequency scene real-time resolving software, completing logic loading and power-on reset by a PCI-E hardware accelerating unit, and completing self-checking of equipment; The method comprises the steps of running a preparation stage, completing copying and loading of external data files such as scene planning files, platform description files, signal waveform files and the like by radio frequency scene real-time resolving software, acquiring radiation source quantity information from the scene planning files, acquiring radiation source antenna installation parameters, antenna patterns and antenna scanning pattern parameter information from the platform