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Radar critical intercepted distance test system

A test system and radar technology, applied in radio wave measurement systems, instruments, etc., can solve the problems of complex test methods and high test costs, and achieve the effects of strong practicability, convenient operation and low test costs.

Pending Publication Date: 2021-10-01
10TH RES INST OF CETC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a radar critical intercepted distance test system with convenient operation, low test cost and comprehensive data testing in view of the current radar critical intercepted distance test method which is complex and has high test cost

Method used

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Examples

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Embodiment Construction

[0017] refer to figure 1. In the preferred embodiment described below, a radar critical intercepted distance test system includes: the radar display and control computer connected to the radar terminal through the network cable, the reconnaissance display and control computer connected to the reconnaissance receiver through the network cable, and the radar target connected through the network cable The integrated control computer of the simulator and the digital control attenuator connects the power divider and the digital control attenuator of the reconnaissance receiver through the radio frequency cable, connects the power divider and the radar target simulator of the radar end machine through the radio frequency cable, and connects the radar target simulator through the low frequency cable Timing equipment that provides time-unified signals for aircraft and reconnaissance receivers. In the radar critical interception distance test: the radar display and control computer se...

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Abstract

A radar critical intercepted distance test system disclosed by the invention is convenient to operate, low in test cost and comprehensive in test data. According to the technical scheme, a radar terminal machine responds to a radar control instruction and transmits a radar signal, the radar signal is divided into two paths through a power divider, one path of radar transmitting signal is sent to a radar target simulator, a radar echo signal is generated and sent to the radar terminal machine for target parameter calculation, and a detection result is transmitted to a radar display and control computer in real time; the other path of radar transmitting signal is sent to a numerical control attenuator, attenuation adjustment is carried out on the received radar transmitting signal, the attenuated radar intercepted signal is sent to a reconnaissance receiver through a radio frequency cable, interception parameter measurement is carried out on the received radar intercepted signal, and an interception result is transmitted to a reconnaissance display control computer in real time, the position of the radar target at the critical moment is searched, the distance between the radar terminal machine and the radar target at the critical moment is calculated according to the position of the radar terminal machine, and the radar critical intercepted distance is obtained.

Description

technical field [0001] The invention relates to a test system for evaluating the radar critical intercepted distance of the low intercept probability performance of radar equipment. Background technique [0002] Radar generally uses low-sidelobe antennas, irregular antenna scanning patterns, precise power control, extremely high radar receiver sensitivity, high processing gain, and coherent detection to achieve low interception. This type of radar is called low interception probability ( Low Probability of Intercept, LPI) radar. To be detected by the reconnaissance receiver, the LPI radar signal needs to reach a certain output signal-to-noise ratio. Since most radars use radio frequency pulse signals, in general, the reconnaissance receiver is in a non-matching receiving and processing state for these signals, and can only perform envelope detection and threshold detection on all signals within the instantaneous receiving bandwidth. When the signal exceeds the given thresh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/40
CPCG01S7/4052
Inventor 曾小东高鹏程芮锡杨芸方涛陈海浪
Owner 10TH RES INST OF CETC
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