Title :
Geolocation of frequency-hopping transmitters via satellite
Author :
Sonnenschein, Alexander ; Hutchinson, Warren K. ; Cummings, William C.
Author_Institution :
Lincoln Lab., MIT, Lexington, MA, USA
fDate :
10/1/1993 12:00:00 AM
Abstract :
An analysis of satellite-communications terminal geolocation performed by means of interception of ground terminal uplink transmissions in which a number of spaceborne interceptors transpond the frequency band of interest to terrestrial location for processing is presented. Interception regions for prototypical terminals and satellites are calculated and the results are presented parametrically as a function of uplink signal-to-noise ratio (SNR). The optimum angular separation of the interceptor satellites is found, and the effect of nonoptimal separation is discussed, as are the practical limitations involved in implementing this geolocation system
Keywords :
frequency agility; radio direction-finding; radio transmitters; satellite relay systems; signal processing; spread spectrum communication; Cramer Rao bounds; frequency-hopping transmitters; ground terminal uplink transmissions; interceptor satellites; nonoptimal separation; optimum angular separation; satellite; satellite-communications terminal geolocation; strawman interceptor; uplink signal-to-noise ratio; Bandwidth; Frequency estimation; Laboratories; Performance analysis; Prototypes; Satellites; Signal processing; Signal to noise ratio; Transmitters; Yield estimation;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
