Abstract: A data compression method, apparatus, a data decompression method and apparatus are provided. In the methods an apparatuses, on the basis of an average effective bit value of data in a data block and an average storage bit width occupied by e remaining part of each item of data in the compressed data block, compression of a fixed compression rate is implemented on the remaining part of the data, reducing the storage space occupied by the remaining part of the data whilst allowing for quick restoration of the compressed data into the original data.

Abstract: Embodiments of the present disclosure provide a method and apparatus for determining a noise floor estimated value, a target detection method and apparatus, and an electronic device. The determining method comprises: obtaining a two-dimensional Fourier data plane corresponding to a linear frequency modulation continuous wave, wherein the two-dimensional Fourier data plane comprises a distance dimension and a Doppler dimension, and the distance dimension comprises a plurality of distances gates; and for each distance gate, determining a noise floor estimated value according to a plurality of two-dimensional Fourier transform energy data of the distance gate along the Doppler dimension. According to the technical solution provided by the embodiments of the present disclosure, the noise floor estimated value of each distance gate is determined, and the efficiency and accuracy of the determined noise floor estimated value are improved.

Abstract: Disclosed are a frequency multiplier, a signal transmitter and a radar chip. The frequency multiplier includes a signal generator that is configured to receive an FMCW signal and output a square wave signal at a frequency same as a frequency of the FMCW signal; and a third harmonic amplifier that is coupled to the signal generator and is configured to amplify a third harmonic wave in the square wave signal and output a frequency-tripled FMCW signal. The above-mentioned solution can improve the generation efficiency of the frequency-tripled signal.

Abstract: A method and apparatus for determining a data storage bit width and a method for storing exponential data. The method for determining the data storage bit width includes: acquiring data to be stored, the number of which is at least 4; dividing the data into blocks according to a preset number 2n, n is an integer greater than or equal to 2; determining effective bit numbers and a value of a maximum effective bit number in a block; dividing data in the block equally into a first sub-block and a second sub-block, acquiring effective bit numbers in first and second sub-blocks; performing a differential calculation on effective bit numbers in first and second sub-blocks to obtain an effective differential value; determining a storage bit width for storing effective differential value according to a preset storage bit width interval to which the value of maximum effective bit number belongs.

Abstract: An interference signal detection method, apparatus, integrated circuit, radio device and terminal are disclosed, wherein, the method includes: transmitting a target signal based on a radar, receiving N frames of echo signals, obtaining N pieces of 2D FFT plane information according to the N frames of echo signals, wherein any piece of 2D FFT plane information includes power information corresponding to a range and a velocity, and detecting whether an echo signal is interfered according to accumulated power information corresponding to the range gate in the piece of 2D FFT plane information. In this way, the interference is characterized by the accumulated power information, which has good robustness and simple operations, and can achieve low power consumption of the radar system.

Abstract: A data processing method is provided, which can be applied to calculating a histogram of a preset data sequence. Each piece of data in the preset data sequence comprises an exponential part and a mantissa part. The method comprises: performing normalization processing on the preset data sequence to obtain a first index and a first mantissa of each data; according to the first index and the first mantissa of each data, generating a register address; and according to the register address, adjusting a numerical value in the corresponding register. The data processing method provided by the disclosure can be used in the process of statistical sorting of fixed point non-negative real number data such as ADC sampling data, floating point non-negative real number data such as two-dimensional FFT power data, and other types of data.

Abstract: An onboard antenna, a radio equipment and an electronic device. The onboard antenna includes a dielectric substrate, an antenna and a metal block, wherein the antenna is located on the dielectric substrate, a projection of the metal block on a plane where the dielectric substrate is located is not overlapped with a projection of the antenna on the plane where the dielectric substrate is located, the metal block is located on the dielectric substrate in a polarization direction of the antenna, and a distance between a metal edge of the metal block on a side close to the antenna and the antenna is greater than a coupling threshold. Using this onboard antenna, an influence of surface waves on the pattern can be suppressed to a certain extent by arranging the metal block, and a jitter of the antenna pattern can be reduced.

Abstract: An attenuation apparatus and a test system. The attenuation apparatus includes a signal transmission channel and at least one radiation loss structure, wherein the signal transmission channel is configured to perform transmission attenuation on the energy of a transmitted signal; the radiation loss structure is arranged in the signal transmission channel; the radiation loss structure has a first operating state and a second operating state; when the radiation loss structure is in the first operating state, the radiation loss structure is configured to perform radiation attenuation on the energy of a signal transmitted by the signal transmission channel; and when the radiation loss structure is in the second operating state, the radiation loss structure is configured to perform transmission attenuation on the energy of the signal transmitted by the signal transmission channel.

Abstract: A microstrip antenna, an antenna array, a radar, and a vehicle are provided. The microstrip antenna includes: a dielectric layer, and a metal layer and a ground plane layer disposed at two sides of the dielectric layer, wherein the metal layer includes a first radiation patch and a feeding portion; a length of a long side edge of the first radiation patch is determined based on an operating wavelength of the microstrip antenna, and a length of a short side edge of the first radiation patch is smaller than the length of the long side edge; the feeding portion is coupled between a center position of the long side edge of the first radiation patch and a short side edge, and the feeding portion is configured to transmit a high frequency signal to the first radiation patch or to transmit a space radiation signal received by the first radiation patch.