Passive Positioning Technology And Its Positioning Accuracy

With the rapid development of radar countermeasures such as electronic jammers and anti-radiation missiles, the active position such as radar is threated strongly. Due to passive position can snugly asceriam radiation source's location, and has the characteristic of positoning far and strong anti-jamming-power .This enhances the whole system's viability and fight efficiency, so the research of passive position is regarded increasingly in all the countries.This text primarily researches three basic passive position systems: Angle of Arrival(AOA) measurement, time-difference-of-arrival(TDOA) measurement and AOA together with TDOA measurement. At one time each performance is analyzed, each graph of geometric dilution of precision(GDOP) is emulated for different station position, different measurement error, and different measurement subset. Accordingly some valuable academic and emulational results are obtained, which provide researchers in this field with definite technical reference. Meanwhile, some methods of eliminate position mistiness are provided.Finally, we research passive position problem of moving station to stable station in 2-D and 3-D space. Discussion about one station passive position in 3-D space has important value in the electronic reconnaissance field.