Vehicle-mounted roadblock warning method based on pre-modulated AIC radar range imaging
A pre-modulation and radar technology, which is applied in the field of vehicle-mounted roadblock warning based on pre-modulation AIC radar high-resolution range imaging technology, can solve the problems of limited signal bandwidth, general resistance to rain and fog, and high complexity and cost of vehicle-mounted radar systems. Reduce adverse effects, improve imaging resolution, and overcome the difficulty of echo distance high-resolution imaging
Active Publication Date: 2017-06-16
SUZHOU WENJIE SENSING TECH
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Problems solved by technology
However, due to its own characteristics, it brings great challenges to system requirements and signal processing.
[0003] In the existing technology, the traditional Nyquist sampling limits the signal bandwidth, and it is impossible to achieve higher resolution range imaging, and its resistance to rain and fog is average. When using high-carrier frequency radar waves, the data sampling and storage of large-bandwidth radar signals And the transmission does not involve how to deal with it, and the complexity and cost of the vehicle radar system brought about are also extremely high
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[0018] The present invention will be further described below in conjunction with accompanying drawing:
[0019] refer to figure 1 , is a schematic flow chart of the vehicle-mounted roadblock warning method based on pre-modulated AIC radar range imaging of the present invention. The vehicle-mounted roadblock warning method based on pre-modulated AIC radar distance imaging comprises the following steps:
[0020] Step 1, installing an inverse synthetic aperture radar on the vehicle for receiving echo signals of targets in front of the vehicle, for example, the inverse synthetic aperture radar is arranged in the middle of the front of the vehicle. The signal output end of the inverse synthetic aperture radar is electrically connected to the signal processing unit, and the signal processing unit is electrically connected to an alarm, the alarm is a sound and light medium such as a speaker or a display, and the alarm is installed on the driving console.
[0021] When the vehicle i...
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The invention belongs to the technical field of the road barrier alarm technology, and further relates to a vehicle-mounted road barrier alarm method based on premodulation AIC radar range imaging. The method comprises the specific steps that when a vehicle runs, an inverse aperture radar is utilized for receiving echo signals reflected by a target scattering point, and coherent demodulation is carried out on the echo signals to obtain base band linear frequency modulation echo signals x(t); a premodulation type analog information converter is adopted for conducting downsampling processing on the base band linear frequency modulation echo signals x(t) to obtain downsampling observation signals; sparse reconstruction is carried out on the downsampling observation signals to obtain a range profile of the target scattering point; constant false alarm detection is carried out on the high-resolution range profile of the target scattering point to obtain a target detection result; according to the target detection result, whether the alarm condition is met or not is judged; if the alarm condition is met, an alarm is controlled to send alarm signals.
Description
technical field [0001] The invention belongs to the technical field of roadblock warning, and further relates to a vehicle-mounted roadblock warning method based on pre-modulated AIC (Analog Information Converter, analog information converter) radar high-resolution range imaging technology. The present invention adopts the pre-modulation AIC down-sampling structure to realize the down-sampling processing of the radar echo in the vehicle-mounted radar system, so as to solve the problems of collection, storage and transmission of super large data in the vehicle-mounted radar, and reduce the complexity and cost of the vehicle-mounted radar system. It is convenient to realize radar signal processing and distance high-resolution imaging. Background technique [0002] Inverse synthetic aperture imaging radar can effectively realize two-dimensional high-resolution imaging of targets, and has the characteristics of all-weather, all-time, and long-distance effects. It is widely used ...
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IPC IPC(8): G01S7/41G01S13/90G01S13/93
CPCG01S7/41G01S13/9029G01S13/931G01S13/9064
Inventor 王敏田彤王勇
Owner SUZHOU WENJIE SENSING TECH