A method and system for ranging from a monopulse radar without a blind zone with a protection channel

A monopulse radar and ranging system technology, which is applied in radio wave measurement systems, measuring devices, radio wave reflection/reradiation, etc., can solve problems such as limited operating distance, limited long-distance measurement, and short ranging range. Achieve the effect of simple structure, low cost and high energy

CN110568430BActive Publication Date: 2021-08-31SHANGHAI RADIO EQUIP RES INST
7 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2021-08-31

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a single-pulse radar non-blind zone ranging method and system with a protection channel, which includes a slot array main antenna, a protection antenna, a high-frequency head, a circulator, an intermediate frequency receiver, a signal processor, a secondary power supply, and a transmitter. machine. The invention is a monopulse system, and the main antenna of the slot array periodically transmits high-frequency pulse signals, and the protection antenna receives the target echo signal in real time; one transmission and one reception realizes the separation of sending and receiving; when there is no ranging blind area, the main antenna of the slot array is used The received echo forms and channel, azimuth difference channel and pitch difference channel data, three-channel data for target distance measurement; when there is a ranging blind area, the main antenna of the slot array is used as a transmitter, and the protection antenna receives echo data to form protection channel data ; Protect the antenna to receive real-time distance observation without blind spots, and meet the requirements of meter-level distance measurement; finally, the pulse method is used for distance measurement, combined with pulse compression to improve the accuracy of ranging, so as to meet the requirements of radar ranging accuracy.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of radar ranging, in particular to a blind-zone-free ranging method and system for monopulse radar with a protection channel. Background technique

[0002] The commonly used ranging methods for radar mainly include pulse ranging and frequency modulation ranging (FMCW). The pulse method calculates the target distance by calculating the time difference between the transmitted pulse and the received pulse. Frequency modulation continuous wave ranging is to measure the distance by using the frequency difference between the echo signal and the transmitted signal, that is, the target distance information contained in the difference frequency, by transmitting an equal-amplitude continuous wave signal whose frequency is modulated. The pulse method has the advantages of high tracking accuracy, long range, and good anti-interference performance; but there is a distance blind zone. The advantage of frequency modulati...

Examples

Embodiment Construction

[0041] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0042] Such as Figure 1-Figure 6 As shown, the present invention provides a single-pulse radar non-blind zone ranging system with a protection channel, which mainly includes a transceiver front-end and a transceiver processing system. The transceiver front-end includes a slot array main antenna 1, a protection antenna 2, and a tuner 3 and a circulator 4, the transceiver processing system includes an intermediate frequency receiver 5, a signal processor 6, a secondary power supply 7 and a transmitter 8.

[0043] Such as figure 1 Shown is the front-end antenna of the ranging radar, and the front-end antenna of the ranging radar is the main antenna 1 and the pr...