Mismatched filter group co-design method based on double least p-norm algorithm

A technology of mismatch filter and design method, applied in the field of radar, can solve problems such as loss of optimization degree of freedom, difficulty in signal realization, disadvantage of weak and small target detection, etc., and achieve the effect of reducing side lobe peak level and multiple degrees of freedom.

A technology of mismatch filter and design method, applied in the field of radar, can solve problems such as loss of optimization degree of freedom, difficulty in signal realization, disadvantage of weak and small target detection, etc., and achieve the effect of reducing side lobe peak level and multiple degrees of freedom.

CN107843877AActive Publication Date: 2018-03-27XIDIAN UNIV +1
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  • Mismatched filter group co-design method based on double least p-norm algorithm
  • Mismatched filter group co-design method based on double least p-norm algorithm
  • Mismatched filter group co-design method based on double least p-norm algorithm

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Embodiment Construction

[0018] refer to figure 1 , is a flow chart of the present invention based on a joint design method of a mismatched filter bank based on a double minimum p-norm algorithm; wherein the joint design method of a mismatch filter bank based on a double minimum p-norm algorithm comprises the following steps :

[0019] Step 1, determine the distributed MIMO radar, there is a target within the detection range of the distributed MIMO radar, and the transmitting end of the distributed MIMO radar includes N t transmit array elements, and then determine the distributed MIMO radar transmit signal as S, the s i Indicates the phase-encoded signal of the i-th transmitting array element, Indicates that the dimension is N s ×N t complex matrix of Indicates the phase encoding signal s of the i-th transmitting array element i The phase vector of the distributed MIMO radar receiving end includes N r receiving array elements, and the receiving end of the distributed MIMO radar is corres...

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Abstract

The invention discloses a mismatched filter group co-design method based on a double least p-norm algorithm. The method mainly comprises steps: a distributed MIMO radar is determined, wherein a targetexists in the distributed MIMO radar detection range, the transmitting end of the distributed MIMO radar comprises Nt transmitting array elements, the receiving end comprises Nr receiving array elements, and the receiving end of the distributed MIMO radar is correspondingly provided with a mismatched filter group; autocorrelation sidelobe column vectors outputted after the Nt transmitting array elements of the distributed MIMO radar are scattered by the target and are then filtered by the mismatched filters of the Nt receiving array elements and cross-correlation sidelobe column vectors outputted after the Nt transmitting array elements of the distributed MIMO radar are scattered by the target and are then filtered by the mismatched filters of the Nt receiving array elements are determined respectively, a minimum function is constructed and solved, and further, the mismatched filter group co-design result based on the double least p-norm algorithm is obtained.

Description

technical field [0001] The invention belongs to the field of radar technology, and in particular relates to a joint design method of a mismatch filter bank based on a double-minimum p-norm algorithm, which is suitable for reducing the distance side lobe level output by a mismatch filter. Background technique [0002] The phase-encoded signal is a common constant modulus signal, which has the advantages of relatively good anti-intercept and high measurement accuracy, and has been widely studied in the research of multiple input multiple output (MIMO) radar; in addition to time dimension and In addition to the frequency dimension, the phase-encoded signal can also provide the symbol dimension and the waveform dimension to realize the mutual orthogonality between the signals; and the absolute orthogonal signal is usually difficult to realize. In practical applications, it is generally possible to "approximate" the quadrature signal by optimizing the signal so that it has the ch...

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Application Information

Patent Timeline
27 Mar 2018
Publication
CN107843877A
IPC
G01S7/36; G06F17/50
CPC
G01S7/36; G06F30/20
Inventors
周生华; 刘美琪