Speed estimation method and device based on echo data

Abstract

The invention provides a speed estimation method and device based on echo data, is suitable for the technical field of radars, is used for automatic driving or intelligent driving, and can complete speed estimation without depending on an inertial sensor. The method comprises the steps of determining a local area from an imaging area, performing imaging processing on echo sub-data in the local area according to a plurality of first to-be-processed speeds to obtain a plurality of first to-be-processed images, the plurality of first to-be-processed speeds being obtained according to a preset speed range, and the echo sub-data being obtained by dividing echo data; each first to-be-processed image corresponds to one first to-be-processed speed, determining a target to-be-processed image from the plurality of first to-be-processed images, determining the first to-be-processed speed corresponding to the target to-be-processed image as the estimated speed of the echo sub-data, and finally obtaining the estimated speed of the echo data. The method can be applied to the Internet of Vehicles, such as vehicle external connection V2X, inter-vehicle communication long term evolution technology LTE-V, vehicle-vehicle V2V and the like.

Description

technical field [0001] The embodiments of the present application relate to the field of radar technology, and in particular to a speed estimation method and device based on echo data. Background technique [0002] Synthetic aperture radar (SAR) is an all-weather and all-weather modern remote sensing imaging radar with long-distance and high-resolution detection capabilities. It is often used in remote sensing mapping, regional detection, geological exploration, disaster rescue and many other fields. . In the broader civilian field, the current vehicle-mounted SAR platform for intelligent driving is becoming a new round of research hotspots. Secondly, during the data acquisition process of SAR, the radar needs to move continuously to form a synthetic aperture, and the echo properties are closely related to the radar moving speed. In imaging processing, the relative velocity information between the radar and the target is one of the key parameters that need to be used in th...

AI Technical Summary

Problems solved by technology

[0004] However, in the vehicle platform, the application of such an inertial sensor system for imaging has a large hardware cost, and will increase the complexity of the system, and the inertial sensor system will have errors in the case of vibration, so there is an urgent need for a Velocity Estimation Method Independent of Inertial Sensors

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