Angle measurement method of radar sequential lobe ratio amplitude
An angle measurement and sequence technology, which is applied to radio wave measurement systems, radio wave reflection/re-radiation, measurement devices, etc. High achievability and improved angle measurement accuracy
Active Publication Date: 2018-06-15
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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Problems solved by technology
The improvement of angle measurement accuracy can be solved by high-cost methods such as increasing the antenna aperture, increasing the transmission power, and increasing the accumulation time, but it affects the economy and practicability of the radar system
[0003] At present, most low-cost radar systems use single-beam search. In this case, sequential lobe ratio amplitude measurement is used to measure the angle. Although the implementation cost is low, the angle measurement accuracy is poor, which is far lower than that of machine-scan axis angle encoding and single pulse ratio amplitude. method, poor practical effect
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[0021] Combine below figure 1 The present invention will be further described in detail with specific embodiments.
[0022] A radar sequential lobe ratio amplitude angle measurement method, its specific implementation method comprises the following steps:
[0023] Step 1. Obtain the measurement data of the target Tar in the beam N to be detected, including the beam pointing θ 0 , beam frequency point F 0 , measuring time t 0 , beam gain G 0 , beam noise N 0 , target amplitude d 0 ;
[0024] Step 2. Obtain the measurement data of the target Tar on the adjacent beam M of the beam N to be detected, including the beam pointing θ 1 , beam frequency point F 1 , measuring time t 1 , beam gain G 1 , beam noise N 1 , target amplitude d 1 ;
[0025] Step 3. Construct the angle measurement data set of the target Tar, which is marked as [θ 0 , F 0 , t 0 , G 0 , N 0 , d 0 ; θ 1 , F 1 , t 1 , G 1 , N 1 , d 1 ];
[0026] Step 4. Perform inter-beam gain correction, i...
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The invention, which relates to the radar target angle measurement in the field of radio measurement, discloses an angle measurement method of a radar sequential lobe ratio amplitude. The method is implemented as follows: constructing a data set; carrying out inter-beam gain correction; carrying out inter-beam noise correction, carrying out inter-beam target amplitude correction; carrying out sequential lobe ratio amplitude angle measurement and calculation and the like. According to the method, data of a target in a to-be-detected beam and a measured beam are processed to improve the measurement accuracy of the traditional sequential lobe ratio amplitude angle measurement. The method has characteristics of high angle measurement accuracy, fast calculation speed, and simple engineering realization; and a problem of low precision of the sequential lobe ratio amplitude angle measurement of the radar system is solved with low costs. The method is especially suitable for high-precision angle measurement of the low-cost single-beam radar.
Description
technical field [0001] The invention relates to a radar sequence lobe ratio amplitude measuring method. Background technique [0002] Target angle measurement is an important measurement task of radar system. The improvement of angle measurement accuracy can be solved by high-cost methods such as increasing the antenna aperture, increasing the transmission power, and increasing the accumulation time, but it affects the economy and practicability of the radar system. [0003] At present, most low-cost radar systems use single-beam search. In this case, sequential lobe ratio amplitude measurement is used to measure the angle. Although the implementation cost is low, the angle measurement accuracy is poor, which is far lower than that of machine-scan axis angle encoding and single pulse ratio amplitude. method, practical effect is poor. Contents of the invention [0004] The main technical problem to be solved by the present invention is to avoid the deficiencies in the abo...
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CPCG01S13/422
Inventor 温博王琳张驰
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP