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Anti-interference BDS/GPS receiver based on array antenna

A GPS receiver and array antenna technology, applied in radio wave measurement systems, satellite radio beacon positioning systems, measurement devices, etc., can solve problems such as abnormal communication results, reduce development risks, reduce development cycles, and benefit engineering the effect of

Pending Publication Date: 2020-04-10
SHANGHAI AEROSPACE CONTROL TECH INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, satellite signals have inherent flaws, and their fragility and fragility make satellite systems easily affected by various interferences in the environment, making communication results abnormal

Method used

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  • Anti-interference BDS/GPS receiver based on array antenna
  • Anti-interference BDS/GPS receiver based on array antenna
  • Anti-interference BDS/GPS receiver based on array antenna

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Embodiment 1

[0058] to combine figure 1 , the present invention is based on an array antenna anti-interference BDS / GPS receiver, the hardware platform is based on radio frequency chip, DSP and FPGA hardware platform, including radio frequency processing unit, anti-interference processing unit, baseband information processing unit, navigation information processing unit, power supply unit. The antenna converts the received GNSS electromagnetic wave signal into a current signal, amplifies the signal through a high-frequency low-noise amplifier, compensates for the attenuation of the signal during transmission, improves the signal-to-noise ratio, and enters the RF processing unit through a band-pass filter; the RF processing unit The satellite signal is amplified, frequency-converted, filtered, and analog-to-digital converted to finally obtain a digital intermediate frequency signal; the anti-interference processing unit performs anti-interference processing on the signal, removes the interfe...

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Abstract

The invention discloses an anti-interference BDS / GPS receiver based on an array antenna. The anti-interference BDS / GPS receiver is based on a hardware platform mainly comprising a radio frequency chip, a DSP and an FPGA, and comprises a radio frequency processing unit, an anti-interference processing unit, a baseband information processing unit, a navigation information processing unit and a powersupply unit, wherein the radio frequency unit amplifies, converts and filters BD radio frequency signals and GPS radio frequency signals input from an antenna end into analog intermediate frequency signals, BD intermediate frequency signals enter the anti-interference processing unit after being subjected to A / D sampling quantization, and GPS intermediate frequency signals enter the baseband information processing unit; the anti-interference processing unit is used for carrying out anti-interference processing on the signals, removing interference signals, reserving useful satellite navigation signals and sending the reserved satellite signals to the baseband information processing unit; and the baseband information processing unit is used for respectively processing the BD intermediate frequency signals and the GPS intermediate frequency signals, and carrying out demodulation, dispreading operation and the like. According to the anti-interference BDS / GPS receiver, mature hardware circuits and software modules are fully utilized, the system development period is shortened, and the development risk is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of anti-jamming positioning, navigation and timing service, in particular to an anti-jamming BDS / GPS receiver based on an array antenna. Background technique [0002] With the progress and development of society, people's demand for satellite navigation is becoming stronger and stronger. With the improvement of the satellite navigation system, it provides all-weather and all-round high-precision positioning and navigation services, making it widely used in various fields of military and civilian use. For today's era, satellite navigation system technology is no longer only able to show the comprehensive strength of a country, but also plays a role in promoting the development of the country's economy, politics and security. At present, my country's Beidou navigation system is also developing quite rapidly, and it is planned to complete the launch of 25 satellites around 2020, and conduct space networking to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/21
CPCG01S19/21G01S19/215
Inventor 孙昭行许东欢何浩林益锋臧中原毋蒙董亮赖思维
Owner SHANGHAI AEROSPACE CONTROL TECH INST
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