SAR system based on all-silicon-based chip

A chip and silicon-based technology, applied in the field of radar, can solve the problems of easy signal leakage loss, complex SAR structure and high production cost, and achieve the effects of good remote low noise, good spurious suppression characteristics, and low cost

Pending Publication Date: 2021-02-19
AEROSPACE INFORMATION RES INST CAS +1
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  • Application Information

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Problems solved by technology

[0005] Based on the above problems, the present disclosure provides a SAR system based on an all-silicon-based chip to alleviate the complex structure, high production cost, high power consumption, easy signal leakage and serious loss of signals in the prior art, single function, and the use of chips. There are technical problems such as serious deterioration of indicators during integration

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Embodiment Construction

[0026] Aiming at the application requirements of miniaturization and ubiquitous payloads, this disclosure provides a SAR system based on an all-silicon chip, which can effectively reduce the volume and weight of the payload by means of radar system chips, and can break through the miniature SAR of the order of ten grams The system meets the application requirements of light and small UAVs; its core module is based on an all-silicon chip, which solves the shortcomings of low integration and large volume power consumption of traditional synthetic aperture radar systems.

[0027] In the process of implementing the present disclosure, the inventors found that the traditional SAR radar signal generation scheme is complicated, the power consumption is relatively large, and chip integration is not used. In the traditional radar signal generation scheme, factors such as high-frequency DAC power consumption, frequency multiplication loss, frequency mixing loss, and filtering loss will c...

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Abstract

The invention provides an SAR system based on an all-silicon-based chip, and the system comprises a phase-locked loop chip which is used for generating a frequency modulation continuous wave signal; aphased array transmitting-receiving front-end chip, wherein the input end of the phased array transmitting-receiving front-end chip is connected with the phase-locked loop chip, and the phased arraytransmitting-receiving front-end chip is used for carrying out multi-channel amplitude-phase modulation on the input frequency-modulated continuous wave signals, outputting the frequency-modulated continuous wave signals to a phased array antenna for transmission, receiving phased array antenna signals at the same time, completing multi-channel receiving amplitude-phase modulation and carrying outdown-conversion after combination to obtain intermediate frequency signals; and an intermediate frequency amplification chip which is connected with the phased array transmitting-receiving front-endchip and is used for carrying out amplification and gain control on the input intermediate frequency signal, providing an enough dynamic range, tuning band-pass filtering and outputting the signal tothe digital sampling unit.

Description

technical field [0001] The present disclosure relates to the field of radar technology, in particular to a SAR system based on an all-silicon chip. Background technique [0002] With the development of unmanned aerial vehicle (UAV) technology, miniaturization and ubiquity are the development trend of unmanned aerial vehicles, and light and small unmanned aerial vehicles have become the rapid A powerful tool for response and proximity detection. [0003] At present, light and small unmanned aerial vehicles equipped with miniature optical and infrared sensing systems have been widely used, but they are easily affected by clouds, rain, and natural light radiation sources. Therefore, small microwave payloads with all-weather and all-weather sensing capabilities have become It has been a research hotspot in recent years and has a wide range of application requirements in high-resolution ground imaging, reconnaissance, target detection, environmental monitoring, and eye tracking....

Claims

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Application Information

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IPC IPC(8): G01S13/89G01S7/282G01S7/285
CPCG01S13/89G01S7/282G01S7/285
Inventor 唐跞丁满来丁赤飚王雪梅曲佳萌
Owner AEROSPACE INFORMATION RES INST CAS
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