METHODS AND SYSTEMS FOR IMPROVING SIGNAL TO PHASE NOISE IN RADARS
First Claim
Patent Images
1. A method for increasing sensitivity of Doppler radar receivers, the method comprising:
- selecting a determinator of nulls in a filter function multiplying a power spectral density of phase noise to position the nulls in order to cancel portions of the power spectral density of the phase noise;
the portions of the power spectral density of the phase noise being selected so that effect of phase noise in radar sensitivity is reduced.
1 Assignment
0 Petitions
Accused Products
Abstract
Methods and systems that reduce the effect of phase noise in radar receivers. The received phase noise spectrum is modulated with periodic nulls due to the two way range delay function. The system and method include strategically positioning the nulls of the delay function to cancel portions of phase noise power spectral density, the portions of the power spectral density of the phase noise being selected so that effect of phase noise in radar sensitivity is reduced.
-
Citations
10 Claims
-
1. A method for increasing sensitivity of Doppler radar receivers, the method comprising:
selecting a determinator of nulls in a filter function multiplying a power spectral density of phase noise to position the nulls in order to cancel portions of the power spectral density of the phase noise;
the portions of the power spectral density of the phase noise being selected so that effect of phase noise in radar sensitivity is reduced.- View Dependent Claims (2, 3, 4, 5)
-
6. A pulsed Doppler radar system comprising:
a transmitter comprising a pulse train generator providing a predetermined pulse repetition frequency (PRF);
the pulse train generator being configured to select the predetermined PRF;
the predetermined PRF selected such that nulls in a filter function multiplying a power spectral density of phase noise are positioned such that portions of the power spectral density of the phase noise are canceled;
said portions being selected so that effect of phase noise in radar sensitivity is reduced.- View Dependent Claims (7, 8)
-
9. A CW Doppler radar receiver system comprising a predetermined time delay component at a receiver input;
- the predetermined time delay component selected such that nulls in a filter function multiplying a power spectral density of phase noise are positioned such that portions of the power spectral density of the phase noise are canceled;
said portions being selected so that effect of phase noise in radar sensitivity is reduced. - View Dependent Claims (10)
- the predetermined time delay component selected such that nulls in a filter function multiplying a power spectral density of phase noise are positioned such that portions of the power spectral density of the phase noise are canceled;
Specification