| 摘要 |
A passive data determination system (10) for use in a traveling projectile (12) is provided including a logarithmic receiver (20) for receiving a power signal Pr from a source target (14) and emitting in response thereto an output voltage signal Eo which is proportional to the logarithm of Pr. A clock pulse signal is provided, such as by an oscillator (22) to measure a change in output voltage DELTA Eo. Means such a microprocessor (28) provides a signal R which is a function of Kvx( DELTA t/ DELTA Eo), where K is equal to -2 (log e) and V is a known relative velocity between the projectile (12) and the target (14) and which indicates the range of the projectile to the target.
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