Generation Mechanism and Characteristic Analysis of Dual-Frequency Pseudo-Signal Interference of the Swept-Frequency Radar

Table 1

After the dual-frequency interference signal enters each structure of the swept-frequency radar, the output component frequency.

Structure	Frequency
Antenna reception	, ,	, ,
First level amplification	, , , , , ,	, , , , , ,
Primary mixing ()	, , , , , , , , , , , , ,	, , , , , , , , , , , , ,
Bandpass filtering ()	, ,	, , ,
Secondary mixing ()	, , , ,	, , , , , , , , , ,
Low pass filtering	(real target echo signal); (second order intermodulation “hill” type pseudo-signal)	(real target echo signal)
		(third-order intermodulation “spike” type pseudo-signal) (second order intermodulation “spike” type pseudo-signal)
		(first-order “hill” type pseudo-signal)
		(first-order “hill” type pseudo-signal)