JPS6431080A - Target-signal detecting circuit - Google Patents

Target-signal detecting circuit

Info

Publication number
JPS6431080A
JPS6431080A JP62187374A JP18737487A JPS6431080A JP S6431080 A JPS6431080 A JP S6431080A JP 62187374 A JP62187374 A JP 62187374A JP 18737487 A JP18737487 A JP 18737487A JP S6431080 A JPS6431080 A JP S6431080A
Authority
JP
Japan
Prior art keywords
target
range
dft
circuits
circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP62187374A
Other languages
Japanese (ja)
Other versions
JPH0677056B2 (en
Inventor
Yoshio Hayashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP62187374A priority Critical patent/JPH0677056B2/en
Publication of JPS6431080A publication Critical patent/JPS6431080A/en
Publication of JPH0677056B2 publication Critical patent/JPH0677056B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Radar Systems Or Details Thereof (AREA)

Abstract

PURPOSE:To enhance the reliability of an apparatus and to facilitate the isolation of causes when a target signal is not detected, by operating discrete Fourier transformation (DFT) circuits in parallel for each range block. CONSTITUTION:Received signals are converted 3a and 3b into a real-part digital signal and an imaginary-part digital signal. The signals are stored in buffer memories 4a and 4b. DFT circuits 101--101-N receive the digital signals at the real part and the imaginary part corresponding to range blocks from the memories 4a and 4b. A required doppler filter group is formed in each range block. The result of the filtering in each doppler filter is sent into a target judging circuit 8. The circuits 101-1-101-N are operated in parallel. The DFT in the circuit 101-1-101-N are carried out for every unit range for data of 1 CPI data in series in the range block. Then the outputs of the N pieces of the circuit 101-1-101-N are received by the judging circuit 8. Thus, in which range block the target block is present is judged.
JP62187374A 1987-07-27 1987-07-27 Target signal detection circuit Expired - Lifetime JPH0677056B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62187374A JPH0677056B2 (en) 1987-07-27 1987-07-27 Target signal detection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62187374A JPH0677056B2 (en) 1987-07-27 1987-07-27 Target signal detection circuit

Publications (2)

Publication Number Publication Date
JPS6431080A true JPS6431080A (en) 1989-02-01
JPH0677056B2 JPH0677056B2 (en) 1994-09-28

Family

ID=16204889

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62187374A Expired - Lifetime JPH0677056B2 (en) 1987-07-27 1987-07-27 Target signal detection circuit

Country Status (1)

Country Link
JP (1) JPH0677056B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5036011A (en) * 1986-09-09 1991-07-30 Director Of National Food Research Institute, Ministry Of Agriculture, Forestry And Fisheries Novel Aureobasidium sp. microorganisms and method for obtaining the same, and method for preparing erythritol with the same
CN109239688A (en) * 2018-07-31 2019-01-18 电子科技大学 A kind of efficient Doppler filter group realized based on FPGA

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS515918A (en) * 1974-07-04 1976-01-19 Nippon Electric Co TEREBIKAIGISOCHI
JPS60165566A (en) * 1984-02-08 1985-08-28 Mitsubishi Electric Corp Radar equipment

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS515918A (en) * 1974-07-04 1976-01-19 Nippon Electric Co TEREBIKAIGISOCHI
JPS60165566A (en) * 1984-02-08 1985-08-28 Mitsubishi Electric Corp Radar equipment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5036011A (en) * 1986-09-09 1991-07-30 Director Of National Food Research Institute, Ministry Of Agriculture, Forestry And Fisheries Novel Aureobasidium sp. microorganisms and method for obtaining the same, and method for preparing erythritol with the same
CN109239688A (en) * 2018-07-31 2019-01-18 电子科技大学 A kind of efficient Doppler filter group realized based on FPGA
CN109239688B (en) * 2018-07-31 2023-06-02 电子科技大学 A High Efficiency Doppler Filter Bank Based on FPGA

Also Published As

Publication number Publication date
JPH0677056B2 (en) 1994-09-28

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