Radar echo signal simulator based on fpga

A signal simulator, radar echo technology, applied in instruments, radio wave measurement systems, etc., can solve problems such as difficult hardware implementation, no amplitude control, and large amount of calculation, and achieve simple and effective frequency calibration, simple method, calculation small amount of effect

Active Publication Date: 2017-12-12
无锡长元新能源电动车科技发展有限公司
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Problems solved by technology

This method is more complicated to calculate, and the amount of calculation is more, it is not easy to implement in hardware and there is no amplitude control

Method used

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  • Radar echo signal simulator based on fpga
  • Radar echo signal simulator based on fpga
  • Radar echo signal simulator based on fpga

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Embodiment Construction

[0028] Starting from the objective requirements, economy, convenience, flexibility, comprehensive control and high repeatability of radar echo signal simulation, the radar echo signal simulator is researched and debugged, so that the radar signal does not need to spend a lot of energy in the field To achieve this, this is a forwarding radar echo signal simulator based on FPGA. First, the radar echo signal is received by the antenna, mixed with the calibrated baseband signal, and the high-frequency component is filtered out, and then A / D sampling is performed to generate a coherent video signal. The signal is processed by an FPGA-based processing algorithm and controlled by a range gate. The basic parameters analyze the target’s radial velocity, Doppler frequency shift, etc., and parameters such as noise can also be added for processing. At the same time, the total clock control module passes through the CORDIC algorithm and the RCS algorithm to analyze its phase and amplitude i...

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Abstract

The invention discloses an FPGA-based radar echo signal simulator. The simulator processes a received radar echo signal. A signal output by a radar transmitter comprises various information of a target, so as to simulate a radar signal. The simulator comprises a signal receiving module, a rated frequency calibration module, an A / D (D / A) conversion module, an FPGA-based information collection module, a clock control module and a noise and clutter module. The echo signal received by the signal receiving module is converted by the calibration module and the A / D module, and is sent into the signal information collection module for signal processing. The radar echo signal is simulated. Target, clutter and noise parameters can be manually set, which is convenient for simulation and debugging.

Description

technical field [0001] The invention belongs to the technical field of radar simulation testing, in particular to a method for collecting radar emission signals, modulating target information, generating radar target echo signals, and designing and realizing a radar echo simulator. Background technique [0002] During the design, development and production of radar systems, the detection of radar performance and indicators is a very important link. The development trend of modern radar systems is becoming more and more complex, so it is becoming more and more difficult to debug and detect the radar as a whole and each subsystem. If the method of field test flight is used, it will consume a lot of manpower and material resources, and the development cycle will be very long. long. At the same time, there are many uncontrollable factors in the field test flight, which increases the difficulty of debugging. The radar signal simulator is the product of the combination of digita...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/40
CPCG01S7/4052
Inventor 李洪涛缪运驰顾陈朱晓华席峰陈胜垚王海青袁泽世施群栋胡姗姗
Owner 无锡长元新能源电动车科技发展有限公司
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