MIMO pulse radar waveform design and optimization method based on application characteristics
A waveform design and pulse radar technology, applied in the field of MIMO pulse radar waveform design and optimization based on application characteristics, can solve the problems of application characteristic optimization and unsatisfactory effect of application characteristics
Active Publication Date: 2019-12-31
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF3 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, the current technology and optimization algorithms lack the optimization of application features, resulting in unsatisfactory application features
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0026] Such as figure 1 As shown, a MIMO pulse radar waveform design and optimization method based on application characteristics includes the following steps:
[0027] Step 1. Set the MIMO radar transmission waveform as a pulse signal, and add different random phases to different transmission waveforms between each pulse to obtain a random phase matrix H of N*M, where N is the number of transmitting antennas of the MIMO radar, M is the pulse number of the transmitted waveform.
[0028] Step 2. After processing the target echo signal, draw a waveform fuzzy map, extract multiple dimensions from it, such as distance dimension, velocity dimension, azimuth angle and elevation angle, and establish a comprehensive index for evaluating the quality of waveform design F, and multiple parameters such as main lobe width, main lobe gain, and main-side lobe ratio of multi-dimensional information are used as basic indicators.
[0029] f i =l 1 δ x +l 2 δ v +l 3 δ a +…
[0030] Amo...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses an MIMO pulse radar waveform design and optimization method based on application characteristics. The method comprises the following steps of: (1) setting a transmitting waveform of the MIMO radar as a pulse signal, and adding different random phases to different transmitting waveforms between pulses to obtain an N*M random phase matrix H, where N is the number of transmitting antennas of the MIMO radar, and M is the number of pulses of the transmitting waveform, (2), drawing a waveform fuzzy graph after the target echo signal is processed, extracting a plurality of dimensions from the waveform fuzzy graph, and establishing a comprehensive index F for evaluating the quality of waveform design, and (3) taking the random phase matrix H in the step (1) as an independent variable and the comprehensive evaluation index F in the step (2) as a dependent variable, retrieving H which enables F to obtain a minimum value in each initial value interval range through a modesearch method, and substituting H into the transmitted waveform to obtain an optimized transmitted waveform. According to the method, all index information is optimized, and compared with other optimization algorithms, the method is simpler and easier to implement.
Description
technical field [0001] The invention relates to the technical field of radar signal processing, in particular to an application feature-based MIMO pulse radar waveform design and optimization method. Background technique [0002] A key factor in the operation of MIMO radars is that multiple orthogonal waveforms can be used simultaneously. The easiest way to obtain quadrature waveforms is time-division multiple access (TDMA), but it is not suitable for schemes that require high PRF for operation; Doppler multiple access (DDMA) MIMO waveforms can only be applied to low-frequency radars (for example, HF radars) or Radar for short-range detection. Since there is no ideal orthogonal code sequence with good automatic and cross-correlation properties, the CDMA MIMO waveform can approximately meet the requirement of orthogonality. [0003] Because the measurement accuracy of the CDMA waveform design method is limited, it needs to be optimized on the basis of the original waveform....
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): G01S7/02
CPCG01S7/02
Inventor 胡文汪亚东王伟光其他发明人请求不公开姓名
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS