Device for generating baseband signal of continuous pulse radar

A baseband signal and generation device technology, which is applied in the directions of measurement devices, radio wave reflection/re-radiation, and utilization of re-radiation, etc., to achieve the effect of realizing light miniaturization, reducing size, and reducing design difficulty

Active Publication Date: 2014-04-30
INST OF ELECTRONICS CHINESE ACAD OF SCI
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Problems solved by technology

[0007] In view of this, the main purpose of the present invention is to provide a continuous pulse radar baseband signal generating device, to overcome the shortcomings of the direct digital waveform synthesizer

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  • Device for generating baseband signal of continuous pulse radar
  • Device for generating baseband signal of continuous pulse radar
  • Device for generating baseband signal of continuous pulse radar

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Embodiment Construction

[0033] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0034] refer to figure 1 , a schematic diagram of the structure of a continuous pulse radar baseband signal generating device is given. It consists of four parts: interface unit, cache unit, speed-up unit and digital-to-analog conversion unit. The interface unit is used to read from the read-only memory and decompress the compressed digital baseband signal; it is also used to generate the Timed control signals are required; the compressed digital baseband data in the read-only memory is updated in real time by communicating with the outside world; the buffer unit is used to cache the decompressed digital baseband data, and at the same time realize the first speed-up of the baseband data; the speed-up unit is used for Qui...

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Abstract

The invention discloses a device for generating a baseband signal of continuous pulse radar. The device for generating the baseband signal of the continuous pulse radar is composed of an interface unit, a cache unit, an acceleration unit, a digital-to-analogue conversion unit and the like, wherein the interface unit is used for reading out a compressed digital baseband signal from a read-only memory, decompressing the compressed digital baseband signal to generate a timing control signal which is needed by a system and updating the compressed digital baseband signal in the read-only memory in real time through communication with the outside, the cache unit is used for caching a large amount of compressed digital baseband data and achieving first-time acceleration of the baseband data, the acceleration unit is used for rapidly reading out multiple paths of digital baseband signals from the cache unit and then improving the speed by times until the speed reaches the speed grade of the digital-to-analogue conversion unit, and the digital-to-analogue conversion unit is used for converting the digital baseband signal into analogue baseband signals. The device for generating the baseband signal of the continuous pulse radar has the advantages that large-pulse-width baseband signals can be output, and predistortion of a waveform is available. The device for generating the baseband signal of the continuous pulse radar is mainly applied to continuous pulse radar exciters.

Description

technical field [0001] The invention relates to a radar exciter, in particular to a continuous pulse radar baseband signal generating device. Background technique [0002] Continuous pulse radar is a new synthetic aperture radar (Synthesis Aperture Radar-SAR), which transmits a group of continuous pulse signals in a predetermined pulse code, receives echoes at pulse intervals, and then synthesizes single pulse echoes through signal processing. . The system radar can increase the working ratio of the transmitter to more than 40%, directly reduce the peak power of the transmitter to the order of 10W, and realize the high performance of the continuous pulse radar with a weight of less than 5kg and a range of more than 10km. [0003] The baseband signal source is an important part of the continuous pulse radar exciter. It is used to generate the baseband signal required by continuous pulse radar. The characteristics of the continuous pulse radar exciter: the number of sub-pul...

Claims

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Application Information

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IPC IPC(8): G01S7/282
CPCG01S7/282G01S13/0209G01S13/90
Inventor 李和平王岩飞张弛朱建光张建龙
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI
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