2results about How to "Efficient and convenient testing" patented technology

The application relates to a vehicle simulation test method and device, computer equipment, a storage medium and a computer program product. A first simulation model of a target vehicle is acquired, a simulation scene library is established, input signals and output signals of an adaptive cruise algorithm are determined in combination with a preset cruise speed, a second simulation model of the target vehicle is established, and simulation test of the target vehicle is performed according to the second simulation model of the target vehicle and the simulation scene library. The problems of high test cost, long test period and low test efficiency of the existing test method can be solved, and efficient and convenient test of the adaptive cruise function of a tractor is realized.

This invention provides a method and system for detecting the scanning direction of a SAR satellite in an agile azimuth observation mode. The method includes: setting up a microwave probe in front of the onboard SAR antenna array to meet the far-field testing conditions and signal energy requirements of the radiating element; disconnecting the port connection between the antenna array calibration network and the internal calibrator; connecting the internal calibrator port to the microwave probe antenna via a ground-based high-frequency test cable; setting the onboard SAR system to a single-TR calibration test mode; performing normal-state single-TR calibration tests and specified-scan state single-TR calibration tests; powering on the entire satellite and recording echo data; performing pulse compression and interpolation processing on the echo data acquired from the two tests to obtain the phase value at the peak value; performing phase difference calculation and reference mapping conversion on the corresponding TR channels to generate a two-dimensional phase difference cloud map; and determining the correctness of the SAR antenna pattern scanning direction based on the two-dimensional phase difference cloud map. This invention reduces the satellite development process and improves the efficiency of integrated SAR testing of the entire satellite.