Radar ranging optimization method
An optimization method, radar ranging technology, applied in measuring devices, radio wave measurement systems, radio wave reflection/reradiation, etc., can solve problems such as difficult implementation
Active Publication Date: 2018-03-30
XIDIAN UNIV
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Problems solved by technology
[0003] Generally, radars use the radar to search for the target and establish the target track, and use the method of formula correction to solve the Doppler distance coupling problem. However, the above method must go through multiple cycles, which is far from enough for special ranging equipment. , the distance measuring equipment only needs to be launched once and must be accurately measured, which is very difficult to achieve
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[0018] refer to figure 1 , is a flowchart of an optimization method for radar ranging of the present invention; wherein the optimization method for radar ranging includes the following steps:
[0019] Step 1. Determine the radar. There is a target within the detection range of the radar, and determine the long code signal and the short code signal from the signal emitted by the radar, and then determine the signal type I and the signal type II respectively.
[0020] Specifically, refer to figure 2 , for the inventive method to realize transmitting wave form time domain and frequency domain figure; t moment radar transmission chirp signal is s(t):
[0021]
[0022] Among them, rect represents the rectangular window function, |t|≤T e / 2, t is satisfied |t|≤T e Any moment of / 2 condition; T e is the pulse width of the chirp signal transmitted by the radar, f 0 is the center frequency of the chirp signal transmitted by the radar, μ is the frequency modulation slope, B...
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The invention discloses a radar ranging optimization method which mainly comprises the steps of determining a fact that a target exists in a radar detecting range, determining a long code signal and ashort code signal in a signal which is transmitted from the radar, and further determining a signal I type and a signal II type; respectively calculating a signal I type long code signal sIf(t') at the time t', a signal I type short code signal sIn(t<~>) at the time t<~>, a signal II type long code signal sIIf(t') at the time t' and a signal II type short code signal sIIn(t<~>) at the time t<~>;and performing calculation according to the signal I type long code signal sIf(t') at the time t', the signal I type short code signal sIn(t<~>) at the time t<~>, the signal II type long code signal sIIf(t') at the time t' and the signal II type short code signal sIIn(t<~>) at the time t<~> for obtaining a first long-distance ranging result R11, a first short-distance ranging result R12, a secondlong-distance ranging result R21 and a second short-distance ranging result R22, and furthermore performing calculation for obtaining a target distance in the radar detecting range.
Description
technical field [0001] The invention relates to the field of radar ranging, in particular to an optimization method for radar ranging, which is suitable for practical engineering applications. Background technique [0002] Modern radars generally use chirp pulse signals to solve the problems of radar operating range and ranging resolution, but the use of chirp signals brings about Doppler range coupling problems, and the error will be larger when the target speed is faster. In this paper, the range-finding radar is mechanically scanned, only for distance measurement, and replaces laser and other distance-finding equipment. It has the advantages of all-weather and all-weather. It is different from ordinary radars in that it only measures distance and can accurately measure distance by emitting an electromagnetic wave. [0003] Generally, radars use the radar to search for the target and establish the target track, and use the method of formula correction to solve the Doppler ...
Claims
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Login to View More IPC IPC(8): G01S13/10
CPCG01S13/106
Inventor 刘代赵永波何学辉苏洪涛徐保庆霍炯
Owner XIDIAN UNIV