4results about How to "Excellent reliability" patented technology

The utility model provides a wide body truck steel plate spring assembly, including first steel plate spring, both ends of first steel plate spring are provided with the ear, the lower part of first steel plate spring is provided with at least one second steel plate spring, and the one end of second steel plate spring adjacent to first steel plate spring is provided with the ear, and the other end of second steel plate spring is provided with the extension plate, the utility model discloses at least one second steel plate spring is equipped in the lower part of first steel plate spring, and the U type ear of one end of adjacent second steel plate spring is wrapped end portion, and the extension plate is equipped at the other end and exceeds the end of first steel plate spring, the design expands the effective length of second steel plate spring, realizes the independent work of first steel plate spring when light load and keeps comfortable, and the second steel plate spring intervention enhances the stiffness when heavy load, and the dynamic regulation stiffness significantly improves the upper limit of bearing.

This invention relates to the field of parameter field cascade reconstruction technology, and discloses a method for cascade reconstruction of three-dimensional water vapor parameter fields based on sparse GNSS station network data. The method includes: 1. Collecting observation data from m GNSS stations sparsely distributed within a target area; 2. Obtaining the slant path water vapor content of all GNSS signals corresponding to each GNSS station; 3. Establishing a water vapor tomography equation set for each GNSS station, using a single GNSS station as the basic unit; 4. Obtaining the local three-dimensional water vapor parameter field of each GNSS station; 5. Dividing the entire target area into spatial units with the same spatial resolution as the local three-dimensional water vapor parameter field of each station, and calculating the spatial correlation coefficient between each spatial unit and the local three-dimensional water vapor parameter field of each station at each height level; 6. Constructing a recursive model to obtain the three-dimensional water vapor parameter field of the target area. This invention achieves high-precision reconstruction of the three-dimensional water vapor parameter field of the target area under sparse GNSS station network conditions, improving the inversion accuracy of three-dimensional water vapor parameter fields based on sparse GNSS station networks.

This invention provides an adaptive coding and modulation method for satellite communication based on link quality estimation, relating to the field of satellite communication. The method includes the following steps: Step S1: The transmitter generates and transmits a physical layer frame containing a pilot sequence; the receiver receives the physical layer frame and extracts the pilot sequence from it, estimating the mean and variance of the channel signal-to-noise ratio (SNR) based on the extracted and transmitted pilot sequences; Step S2: Based on the mean and variance of the channel SNR estimated in Step S1, the receiver queries a preset joint decision table to determine the coding and modulation scheme and pilot insertion frequency for the next frame, and feeds this information back to the transmitter to adjust the transmission strategy. This invention achieves optimal combined system throughput and reliability performance even when the channel state changes rapidly.