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A coherent radar wide pulse waveform generation method and device

A waveform generation and coherent radar technology, which is applied to radio wave measurement systems, instruments, and electrical digital data processing, can solve problems affecting signal processing and timing control, large storage capacity of wide pulse waveforms, and large on-chip resource occupation. , to achieve the effect of solving the jitter at the leading edge of DA playback, ensuring waveform coherence, and ensuring continuity

Active Publication Date: 2022-04-12
BEIJING INST OF ENVIRONMENTAL FEATURES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is that in the prior art, the large storage capacity of wide pulse waveforms leads to problems such as large on-chip resource occupation, insufficient logic resources, and tight timing, which affects signal processing and timing control, and timing instability occurs. Defects in the prior art provide a coherent radar wide pulse waveform generation method and device

Method used

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  • A coherent radar wide pulse waveform generation method and device

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Embodiment 1

[0034] Such as figure 1 As shown, it is a schematic structural diagram of a coherent radar wide pulse waveform generation device provided by Embodiment 1 of the present invention, including: an interface module, an integration module 200 , a read / write state machine 300 and a radar timing state machine 400 .

[0035] The interface module includes a digital-to-analog conversion interface 110 and a PCI interface 120 .

[0036] The integrated module 200 includes: a front-stage FIFO (first-in-first-out queue) 210 , a rear-stage FIFO 220 , a DDR (Double Rate Synchronous Dynamic Random Access Memory) 230 , and a DDR MIG core 240 . In the integrated module 200, the input end of the front-stage FIFO 210 is connected to the PCI interface 120 for receiving the waveform data issued, and the output end of the front-stage FIFO 210 is connected to the read-write state machine 300, and the The waveform data is output to the read / write state machine 300 . The input end of the rear-stage FIF...

Embodiment 2

[0047] Such as figure 1 As shown, the coherent radar wide pulse waveform generation method provided by Embodiment 1 of the present invention is specifically executed according to the following steps:

[0048] Firstly, in step S1, the front-stage FIFO 210 receives the delivered waveform data.

[0049] The waveform data received by the front-stage FIFO 210 in the present invention is generated through simulation according to the requirement of the radar transmission waveform. Therefore, the method of the present invention may also include: first generating waveform data through simulation, and saving it into a waveform file, and then sending the waveform data to the front-end FIFO 210 through the PCI interface 120 through the host computer software. The specific process can be as follows: after the host computer software sends the waveform data download command, the waveform data is transmitted to the PCI interface 120 through the PCI bus, and written into the front-stage FIFO ...

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Abstract

The present invention relates to a coherent radar wide pulse waveform generation method and device. The method comprises: receiving the waveform data issued by the front-stage FIFO; using the read and write control of the front-stage FIFO to store the waveform data through the DDR MIG core into the DDR; use the post-stage FIFO programmable full signal to control the DDR MIG core to pre-read the waveform data from the DDR; when the internal trigger signal generated according to the radar start command is detected, the post-stage FIFO outputs the waveform data to the digital-to-analog conversion interface , to generate analog signals and realize waveform output. The method of the invention is used to generate coherent radar wide pulse waveforms, which can greatly release on-chip resources, and is flexible in application, and can ensure the coherence and continuity of radar transmission waveforms.

Description

technical field [0001] The invention relates to the technical field of radar signal processing, in particular to a method and device for generating a coherent radar wide pulse waveform. Background technique [0002] At present, the dynamic target scattering measurement system has the ability of target search, tracking and measurement, and can realize the tracking of moving targets and the acquisition of characteristic measurement data. The measurement system needs to have the ability to transmit coherent pulse waveforms, and there are many types of waveforms and large pulse widths. During the working process, the waveforms can be adaptively replaced in real time according to the target position information. According to the requirements, various waveforms need to be generated and stored in the cache, and the transmitting waveform address can be changed in real time according to the mode and parameter information during the working process to achieve the purpose of switching ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/282G01S7/28G06F13/16
CPCG01S7/282G01S7/2806G06F13/1668
Inventor 刘胤凯冯孝斌沈小玲张云张达凯苗苗邵景星冯雨李熙民王晓
Owner BEIJING INST OF ENVIRONMENTAL FEATURES
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