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Ultra-wideband radar signal generating and synthesizing device

An ultra-wideband radar and signal generation technology, which is applied in the directions of measuring devices, radio wave reflection/re-radiation, and re-radiation, can solve the problems of discontinuous phase at the splicing point and cannot provide instantaneous ultra-large bandwidth, etc., and achieve simple circuit, High reliability and easy-to-achieve effects

Inactive Publication Date: 2014-05-07
SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM
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Problems solved by technology

This method cannot provide instantaneous ultra-large bandwidth, and there will be phase discontinuity at the splicing point

Method used

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  • Ultra-wideband radar signal generating and synthesizing device
  • Ultra-wideband radar signal generating and synthesizing device

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Embodiment Construction

[0020] An embodiment of the present invention provides an ultra-wideband radar signal generating and synthesizing device, which includes:

[0021] The bus control communication module, receives the control command and generates the waveform control signal;

[0022] The ultra-wideband waveform generation module includes an FPGA and a DAC, wherein the FPGA generates multiple parallel digital signals according to the received waveform control signal and clock signal, and the DAC receives the parallel digital signals and performs parallel-serial conversion to synthesize high-speed DDS data and digital-to-analog conversion to output radar signal;

[0023] The analog correction signal generating module receives the ultra-wideband radar signal and outputs analog correction signals of one sum channel and two difference channels.

[0024] The waveform control signal includes a wideband generation signal and a narrowband generation signal, the wideband generation signal controls the FP...

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Abstract

The invention provides an ultra-wideband radar signal generating and synthesizing device, which comprises a bus control communication module, an ultra-wideband waveform generating module and a simulated correction signal generating module, wherein the bus control communication module receives a control instruction and generates waveform control signals; the ultra-wideband waveform generating module comprises an FPGA and a DAC, the FPGA generates multichannel parallel digital signals according to the received waveform control signals and clock signals, and the DAC receives the parallel digital signals, carries out parallel-serial conversion to synthesize high-speed DDS data, and carries out analog-digital conversion to output radar signals; and the simulated correction signal generating module receives the ultra-wideband radar signals and outputs simulated correction signals of a sum channel and two difference channels. The generated ultra-wideband signals are synthesized by adopting a digital mode, and a hardware circuit is simple in structure.

Description

technical field [0001] The invention relates to ultra-wideband waveform synthesis technology, in particular to a generating and synthesizing device for providing instantaneous ultra-wideband radar signals. Background technique [0002] As an indispensable device in the modern military field, radar is not only required to complete the extraction of target position, speed and other information, but also requires imaging analysis and identification of the target, and has anti-jamming, anti-stealth and self-defense capabilities. Strong survivability. Obviously, this requires that the signal emitted by the radar has a large bandwidth. Wideband radar signals are also widely used in synthetic aperture and inverse synthetic aperture radar. [0003] At present, most ultra-wideband radar signals generated in China use the splicing method of combining narrowband and wideband, such as using frequency-stepped pulse train signals or using quadrature modulation to synthesize broadband....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/282G01S7/35
CPCG01S7/282G01S7/35G01S13/0209
Inventor 杨振刘世劼李培陆文斌
Owner SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM
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