Title:
AGC LOOP FEEDBACK MAINTAINING METHOD UNDER STRONG INTERFERENCE MODE
Document Type and Number:
WIPO Patent Application WO/2019/000774
Kind Code:
A1
Abstract:
The present invention relates to an AGC loop feedback maintaining method under a strong interference mode, comprising: S1, setting an AGC processing time interval and a communication mode between an FPGA and a DSP; S2, in a tracking mode, when an information processing time is greater than 100 frames, averaging AGC calculation values of first 10 frames and feeding the result to the FPGA; S3, when a signal with an amplitude greater than a target amplitude is detected in 3 consecutive frames outside a target tracking range, setting an interference flag bit to be 1 and changing a constant false alarm detection threshold; S4, when the signal with the amplitude greater than the target amplitude is not detected in 3 consecutive frames outside the target tracking range, setting the interference flag bit to be 0; S5, setting an interference leaving flag bit to be 1 when a previous frame of the interference flag bit is 1 and a current frame is 0; and S6, when the interference leaving flag bit is 1 and a tracking counter reaches 500, allowing the FPGA to calculate the AGC calculation values in real time, and then returning to S2. The present invention can deal with a phenomenon that target energy is suppressed under a strong interference mode, and thus can prevent a target from being annihilated when strong interference suddenly occurs.
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Inventors:
LI SHUANGSHUANG (CN)
CAI XIN (CN)
SHEN JIAN (CN)
WANG ZHICHENG (CN)
TANG ZHENHUA (CN)
YU YUSHENG (CN)
CAI XIN (CN)
SHEN JIAN (CN)
WANG ZHICHENG (CN)
TANG ZHENHUA (CN)
YU YUSHENG (CN)
Application Number:
PCT/CN2017/109228
Publication Date:
January 03, 2019
Filing Date:
November 03, 2017
Export Citation:
Assignee:
SHANGHAI RADIO EQUIPMENT RES INSTITUTE (CN)
International Classes:
G01S7/36
Foreign References:
| CN106505959A | 2017-03-15 | |||
| CN105515597A | 2016-04-20 | |||
| US20070008215A1 | 2007-01-11 | |||
| CN106772274A | 2017-05-31 |
Attorney, Agent or Firm:
SUNSHINEIP INTELLECTUAL PROPERTY LAW FIRM (CN)
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